21109660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:116

約数の個数: 96

約数和(自身を含む): 53371584

約数和(自身を除く): 32261924

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 61, 65, 110, 121, 122, 130, 143, 220, 242, 244, 260, 286, 305, 484, 572, 605, 610, 671, 715, 793, 1210, 1220, 1331, 1342, 1430, 1573, 1586, 2420, 2662, 2684, 2860, 3146, 3172, 3355, 3965, 5324, 6292, 6655, 6710, 7381, 7865, 7930, 8723, 13310, 13420, 14762, 15730, 15860, 17303, 17446, 26620, 29524, 31460, 34606, 34892, 36905, 43615, 69212, 73810, 81191, 86515, 87230, 95953, 147620, 162382, 173030, 174460, 191906, 324764, 346060, 383812, 405955, 479765, 811910, 959530, 1055483, 1623820, 1919060, 2110966, 4221932, 5277415, 10554830, 21109660]

約数ペア:

[(1, 21109660), (2, 10554830), (4, 5277415), (5, 4221932), (10, 2110966), (11, 1919060), (13, 1623820), (20, 1055483), (22, 959530), (26, 811910), (44, 479765), (52, 405955), (55, 383812), (61, 346060), (65, 324764), (110, 191906), (121, 174460), (122, 173030), (130, 162382), (143, 147620), (220, 95953), (242, 87230), (244, 86515), (260, 81191), (286, 73810), (305, 69212), (484, 43615), (572, 36905), (605, 34892), (610, 34606), (671, 31460), (715, 29524), (793, 26620), (1210, 17446), (1220, 17303), (1331, 15860), (1342, 15730), (1430, 14762), (1573, 13420), (1586, 13310), (2420, 8723), (2662, 7930), (2684, 7865), (2860, 7381), (3146, 6710), (3172, 6655), (3355, 6292), (3965, 5324)]