81091980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10477}}^1$

素因数の和:10535

約数の個数: 72

約数和(自身を含む): 251723472

約数和(自身を除く): 170631492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 10477, 20954, 31431, 41908, 52385, 62862, 94293, 104770, 125724, 157155, 188586, 209540, 314310, 377172, 450511, 471465, 628620, 901022, 942930, 1351533, 1802044, 1885860, 2252555, 2703066, 4054599, 4505110, 5406132, 6757665, 8109198, 9010220, 13515330, 16218396, 20272995, 27030660, 40545990, 81091980]

約数ペア:

[(1, 81091980), (2, 40545990), (3, 27030660), (4, 20272995), (5, 16218396), (6, 13515330), (9, 9010220), (10, 8109198), (12, 6757665), (15, 5406132), (18, 4505110), (20, 4054599), (30, 2703066), (36, 2252555), (43, 1885860), (45, 1802044), (60, 1351533), (86, 942930), (90, 901022), (129, 628620), (172, 471465), (180, 450511), (215, 377172), (258, 314310), (387, 209540), (430, 188586), (516, 157155), (645, 125724), (774, 104770), (860, 94293), (1290, 62862), (1548, 52385), (1935, 41908), (2580, 31431), (3870, 20954), (7740, 10477)]