21000604772

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{139487}}^1$

素因数の和:139800

約数の個数: 48

約数和(自身を含む): 44368343040

約数和(自身を除く): 23367738268

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 283, 532, 566, 1132, 1981, 3962, 5377, 7924, 10754, 21508, 37639, 75278, 139487, 150556, 278974, 557948, 976409, 1952818, 2650253, 3905636, 5300506, 10601012, 18551771, 37103542, 39474821, 74207084, 78949642, 157899284, 276323747, 552647494, 750021599, 1105294988, 1500043198, 3000086396, 5250151193, 10500302386, 21000604772]

約数ペア:

[(1, 21000604772), (2, 10500302386), (4, 5250151193), (7, 3000086396), (14, 1500043198), (19, 1105294988), (28, 750021599), (38, 552647494), (76, 276323747), (133, 157899284), (266, 78949642), (283, 74207084), (532, 39474821), (566, 37103542), (1132, 18551771), (1981, 10601012), (3962, 5300506), (5377, 3905636), (7924, 2650253), (10754, 1952818), (21508, 976409), (37639, 557948), (75278, 278974), (139487, 150556)]