21000299031

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{177943}}^1$

素因数の和:178033

約数の個数: 40

約数和(自身を含む): 33071960064

約数和(自身を除く): 12071661033

約数列:

[1, 3, 9, 27, 31, 47, 81, 93, 141, 279, 423, 837, 1269, 1457, 2511, 3807, 4371, 13113, 39339, 118017, 177943, 533829, 1601487, 4804461, 5516233, 8363321, 14413383, 16548699, 25089963, 49646097, 75269889, 148938291, 225809667, 259262951, 446814873, 677429001, 777788853, 2333366559, 7000099677, 21000299031]

約数ペア:

[(1, 21000299031), (3, 7000099677), (9, 2333366559), (27, 777788853), (31, 677429001), (47, 446814873), (81, 259262951), (93, 225809667), (141, 148938291), (279, 75269889), (423, 49646097), (837, 25089963), (1269, 16548699), (1457, 14413383), (2511, 8363321), (3807, 5516233), (4371, 4804461), (13113, 1601487), (39339, 533829), (118017, 177943)]