20854680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:130

約数の個数: 256

約数和(自身を含む): 81423360

約数和(自身を除く): 60568680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 37, 40, 42, 44, 55, 56, 60, 61, 66, 70, 74, 77, 84, 88, 105, 110, 111, 120, 122, 132, 140, 148, 154, 165, 168, 183, 185, 210, 220, 222, 231, 244, 259, 264, 280, 296, 305, 308, 330, 366, 370, 385, 407, 420, 427, 440, 444, 462, 488, 518, 555, 610, 616, 660, 671, 732, 740, 770, 777, 814, 840, 854, 888, 915, 924, 1036, 1110, 1155, 1220, 1221, 1281, 1295, 1320, 1342, 1464, 1480, 1540, 1554, 1628, 1708, 1830, 1848, 2013, 2035, 2072, 2135, 2220, 2257, 2310, 2440, 2442, 2562, 2590, 2684, 2849, 3080, 3108, 3256, 3355, 3416, 3660, 3885, 4026, 4070, 4270, 4440, 4514, 4620, 4697, 4884, 5124, 5180, 5368, 5698, 6105, 6216, 6405, 6710, 6771, 7320, 7770, 8052, 8140, 8540, 8547, 9028, 9240, 9394, 9768, 10065, 10248, 10360, 11285, 11396, 12210, 12810, 13420, 13542, 14091, 14245, 15540, 15799, 16104, 16280, 17080, 17094, 18056, 18788, 20130, 22570, 22792, 23485, 24420, 24827, 25620, 26840, 27084, 28182, 28490, 31080, 31598, 33855, 34188, 37576, 40260, 42735, 45140, 46970, 47397, 48840, 49654, 51240, 54168, 56364, 56980, 63196, 67710, 68376, 70455, 74481, 78995, 80520, 85470, 90280, 93940, 94794, 99308, 112728, 113960, 124135, 126392, 135420, 140910, 148962, 157990, 170940, 173789, 187880, 189588, 198616, 236985, 248270, 270840, 281820, 297924, 315980, 341880, 347578, 372405, 379176, 473970, 496540, 521367, 563640, 595848, 631960, 695156, 744810, 868945, 947940, 993080, 1042734, 1390312, 1489620, 1737890, 1895880, 2085468, 2606835, 2979240, 3475780, 4170936, 5213670, 6951560, 10427340, 20854680]

約数ペア:

[(1, 20854680), (2, 10427340), (3, 6951560), (4, 5213670), (5, 4170936), (6, 3475780), (7, 2979240), (8, 2606835), (10, 2085468), (11, 1895880), (12, 1737890), (14, 1489620), (15, 1390312), (20, 1042734), (21, 993080), (22, 947940), (24, 868945), (28, 744810), (30, 695156), (33, 631960), (35, 595848), (37, 563640), (40, 521367), (42, 496540), (44, 473970), (55, 379176), (56, 372405), (60, 347578), (61, 341880), (66, 315980), (70, 297924), (74, 281820), (77, 270840), (84, 248270), (88, 236985), (105, 198616), (110, 189588), (111, 187880), (120, 173789), (122, 170940), (132, 157990), (140, 148962), (148, 140910), (154, 135420), (165, 126392), (168, 124135), (183, 113960), (185, 112728), (210, 99308), (220, 94794), (222, 93940), (231, 90280), (244, 85470), (259, 80520), (264, 78995), (280, 74481), (296, 70455), (305, 68376), (308, 67710), (330, 63196), (366, 56980), (370, 56364), (385, 54168), (407, 51240), (420, 49654), (427, 48840), (440, 47397), (444, 46970), (462, 45140), (488, 42735), (518, 40260), (555, 37576), (610, 34188), (616, 33855), (660, 31598), (671, 31080), (732, 28490), (740, 28182), (770, 27084), (777, 26840), (814, 25620), (840, 24827), (854, 24420), (888, 23485), (915, 22792), (924, 22570), (1036, 20130), (1110, 18788), (1155, 18056), (1220, 17094), (1221, 17080), (1281, 16280), (1295, 16104), (1320, 15799), (1342, 15540), (1464, 14245), (1480, 14091), (1540, 13542), (1554, 13420), (1628, 12810), (1708, 12210), (1830, 11396), (1848, 11285), (2013, 10360), (2035, 10248), (2072, 10065), (2135, 9768), (2220, 9394), (2257, 9240), (2310, 9028), (2440, 8547), (2442, 8540), (2562, 8140), (2590, 8052), (2684, 7770), (2849, 7320), (3080, 6771), (3108, 6710), (3256, 6405), (3355, 6216), (3416, 6105), (3660, 5698), (3885, 5368), (4026, 5180), (4070, 5124), (4270, 4884), (4440, 4697), (4514, 4620)]