21086560

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11981}}^1$

素因数の和:12007

約数の個数: 48

約数和(自身を含む): 54350352

約数和(自身を除く): 33263792

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11981, 23962, 47924, 59905, 95848, 119810, 131791, 191696, 239620, 263582, 383392, 479240, 527164, 658955, 958480, 1054328, 1317910, 1916960, 2108656, 2635820, 4217312, 5271640, 10543280, 21086560]

約数ペア:

[(1, 21086560), (2, 10543280), (4, 5271640), (5, 4217312), (8, 2635820), (10, 2108656), (11, 1916960), (16, 1317910), (20, 1054328), (22, 958480), (32, 658955), (40, 527164), (44, 479240), (55, 383392), (80, 263582), (88, 239620), (110, 191696), (160, 131791), (176, 119810), (220, 95848), (352, 59905), (440, 47924), (880, 23962), (1760, 11981)]