21847760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 120

約数和(自身を含む): 58282728

約数和(自身を除く): 36434968

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 61, 74, 80, 88, 110, 121, 122, 148, 176, 185, 220, 242, 244, 296, 305, 370, 407, 440, 484, 488, 592, 605, 610, 671, 740, 814, 880, 968, 976, 1210, 1220, 1342, 1480, 1628, 1936, 2035, 2257, 2420, 2440, 2684, 2960, 3256, 3355, 4070, 4477, 4514, 4840, 4880, 5368, 6512, 6710, 7381, 8140, 8954, 9028, 9680, 10736, 11285, 13420, 14762, 16280, 17908, 18056, 22385, 22570, 24827, 26840, 29524, 32560, 35816, 36112, 36905, 44770, 45140, 49654, 53680, 59048, 71632, 73810, 89540, 90280, 99308, 118096, 124135, 147620, 179080, 180560, 198616, 248270, 273097, 295240, 358160, 397232, 496540, 546194, 590480, 993080, 1092388, 1365485, 1986160, 2184776, 2730970, 4369552, 5461940, 10923880, 21847760]

約数ペア:

[(1, 21847760), (2, 10923880), (4, 5461940), (5, 4369552), (8, 2730970), (10, 2184776), (11, 1986160), (16, 1365485), (20, 1092388), (22, 993080), (37, 590480), (40, 546194), (44, 496540), (55, 397232), (61, 358160), (74, 295240), (80, 273097), (88, 248270), (110, 198616), (121, 180560), (122, 179080), (148, 147620), (176, 124135), (185, 118096), (220, 99308), (242, 90280), (244, 89540), (296, 73810), (305, 71632), (370, 59048), (407, 53680), (440, 49654), (484, 45140), (488, 44770), (592, 36905), (605, 36112), (610, 35816), (671, 32560), (740, 29524), (814, 26840), (880, 24827), (968, 22570), (976, 22385), (1210, 18056), (1220, 17908), (1342, 16280), (1480, 14762), (1628, 13420), (1936, 11285), (2035, 10736), (2257, 9680), (2420, 9028), (2440, 8954), (2684, 8140), (2960, 7381), (3256, 6710), (3355, 6512), (4070, 5368), (4477, 4880), (4514, 4840)]