21001035

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7487}}^1$

素因数の和:7523

約数の個数: 32

約数和(自身を含む): 38817792

約数和(自身を除く): 17816757

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7487, 22461, 37435, 82357, 112305, 127279, 247071, 381837, 411785, 636395, 1235355, 1400069, 1909185, 4200207, 7000345, 21001035]

約数ペア:

[(1, 21001035), (3, 7000345), (5, 4200207), (11, 1909185), (15, 1400069), (17, 1235355), (33, 636395), (51, 411785), (55, 381837), (85, 247071), (165, 127279), (187, 112305), (255, 82357), (561, 37435), (935, 22461), (2805, 7487)]