81131940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2699}}^1$

素因数の和:2881

約数の個数: 72

約数和(自身を含む): 247665600

約数和(自身を除く): 166533660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 167, 180, 334, 501, 668, 835, 1002, 1503, 1670, 2004, 2505, 2699, 3006, 3340, 5010, 5398, 6012, 7515, 8097, 10020, 10796, 13495, 15030, 16194, 24291, 26990, 30060, 32388, 40485, 48582, 53980, 80970, 97164, 121455, 161940, 242910, 450733, 485820, 901466, 1352199, 1802932, 2253665, 2704398, 4056597, 4507330, 5408796, 6760995, 8113194, 9014660, 13521990, 16226388, 20282985, 27043980, 40565970, 81131940]

約数ペア:

[(1, 81131940), (2, 40565970), (3, 27043980), (4, 20282985), (5, 16226388), (6, 13521990), (9, 9014660), (10, 8113194), (12, 6760995), (15, 5408796), (18, 4507330), (20, 4056597), (30, 2704398), (36, 2253665), (45, 1802932), (60, 1352199), (90, 901466), (167, 485820), (180, 450733), (334, 242910), (501, 161940), (668, 121455), (835, 97164), (1002, 80970), (1503, 53980), (1670, 48582), (2004, 40485), (2505, 32388), (2699, 30060), (3006, 26990), (3340, 24291), (5010, 16194), (5398, 15030), (6012, 13495), (7515, 10796), (8097, 10020)]