81001180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{863}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 193560192

約数和(自身を除く): 112559012

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 361, 380, 494, 722, 863, 988, 1235, 1444, 1726, 1805, 2470, 3452, 3610, 4315, 4693, 4940, 7220, 8630, 9386, 11219, 16397, 17260, 18772, 22438, 23465, 32794, 44876, 46930, 56095, 65588, 81985, 93860, 112190, 163970, 213161, 224380, 311543, 327940, 426322, 623086, 852644, 1065805, 1246172, 1557715, 2131610, 3115430, 4050059, 4263220, 6230860, 8100118, 16200236, 20250295, 40500590, 81001180]

約数ペア:

[(1, 81001180), (2, 40500590), (4, 20250295), (5, 16200236), (10, 8100118), (13, 6230860), (19, 4263220), (20, 4050059), (26, 3115430), (38, 2131610), (52, 1557715), (65, 1246172), (76, 1065805), (95, 852644), (130, 623086), (190, 426322), (247, 327940), (260, 311543), (361, 224380), (380, 213161), (494, 163970), (722, 112190), (863, 93860), (988, 81985), (1235, 65588), (1444, 56095), (1726, 46930), (1805, 44876), (2470, 32794), (3452, 23465), (3610, 22438), (4315, 18772), (4693, 17260), (4940, 16397), (7220, 11219), (8630, 9386)]