21916440

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:263

約数の個数: 256

約数和(自身を含む): 90316800

約数和(自身を除く): 68400360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 27, 28, 30, 35, 36, 39, 40, 42, 45, 52, 54, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 104, 105, 108, 117, 120, 126, 130, 135, 140, 156, 168, 180, 182, 189, 195, 210, 216, 223, 234, 252, 260, 270, 273, 280, 312, 315, 351, 360, 364, 378, 390, 420, 446, 455, 468, 504, 520, 540, 546, 585, 630, 669, 702, 728, 756, 780, 819, 840, 892, 910, 936, 945, 1080, 1092, 1115, 1170, 1260, 1338, 1365, 1404, 1512, 1560, 1561, 1638, 1755, 1784, 1820, 1890, 2007, 2184, 2230, 2340, 2457, 2520, 2676, 2730, 2808, 2899, 3122, 3276, 3345, 3510, 3640, 3780, 4014, 4095, 4460, 4680, 4683, 4914, 5352, 5460, 5798, 6021, 6244, 6552, 6690, 7020, 7560, 7805, 8028, 8190, 8697, 8920, 9366, 9828, 10035, 10920, 11596, 12042, 12285, 12488, 13380, 14040, 14049, 14495, 15610, 16056, 16380, 17394, 18732, 19656, 20070, 20293, 23192, 23415, 24084, 24570, 26091, 26760, 28098, 28990, 30105, 31220, 32760, 34788, 37464, 40140, 40586, 42147, 43485, 46830, 48168, 49140, 52182, 56196, 57980, 60210, 60879, 62440, 69576, 70245, 78273, 80280, 81172, 84294, 86970, 93660, 98280, 101465, 104364, 112392, 115960, 120420, 121758, 130455, 140490, 156546, 162344, 168588, 173940, 182637, 187320, 202930, 208728, 210735, 240840, 243516, 260910, 280980, 304395, 313092, 337176, 347880, 365274, 391365, 405860, 421470, 487032, 521820, 547911, 561960, 608790, 626184, 730548, 782730, 811720, 842940, 913185, 1043640, 1095822, 1217580, 1461096, 1565460, 1685880, 1826370, 2191644, 2435160, 2739555, 3130920, 3652740, 4383288, 5479110, 7305480, 10958220, 21916440]

約数ペア:

[(1, 21916440), (2, 10958220), (3, 7305480), (4, 5479110), (5, 4383288), (6, 3652740), (7, 3130920), (8, 2739555), (9, 2435160), (10, 2191644), (12, 1826370), (13, 1685880), (14, 1565460), (15, 1461096), (18, 1217580), (20, 1095822), (21, 1043640), (24, 913185), (26, 842940), (27, 811720), (28, 782730), (30, 730548), (35, 626184), (36, 608790), (39, 561960), (40, 547911), (42, 521820), (45, 487032), (52, 421470), (54, 405860), (56, 391365), (60, 365274), (63, 347880), (65, 337176), (70, 313092), (72, 304395), (78, 280980), (84, 260910), (90, 243516), (91, 240840), (104, 210735), (105, 208728), (108, 202930), (117, 187320), (120, 182637), (126, 173940), (130, 168588), (135, 162344), (140, 156546), (156, 140490), (168, 130455), (180, 121758), (182, 120420), (189, 115960), (195, 112392), (210, 104364), (216, 101465), (223, 98280), (234, 93660), (252, 86970), (260, 84294), (270, 81172), (273, 80280), (280, 78273), (312, 70245), (315, 69576), (351, 62440), (360, 60879), (364, 60210), (378, 57980), (390, 56196), (420, 52182), (446, 49140), (455, 48168), (468, 46830), (504, 43485), (520, 42147), (540, 40586), (546, 40140), (585, 37464), (630, 34788), (669, 32760), (702, 31220), (728, 30105), (756, 28990), (780, 28098), (819, 26760), (840, 26091), (892, 24570), (910, 24084), (936, 23415), (945, 23192), (1080, 20293), (1092, 20070), (1115, 19656), (1170, 18732), (1260, 17394), (1338, 16380), (1365, 16056), (1404, 15610), (1512, 14495), (1560, 14049), (1561, 14040), (1638, 13380), (1755, 12488), (1784, 12285), (1820, 12042), (1890, 11596), (2007, 10920), (2184, 10035), (2230, 9828), (2340, 9366), (2457, 8920), (2520, 8697), (2676, 8190), (2730, 8028), (2808, 7805), (2899, 7560), (3122, 7020), (3276, 6690), (3345, 6552), (3510, 6244), (3640, 6021), (3780, 5798), (4014, 5460), (4095, 5352), (4460, 4914), (4680, 4683)]