21957640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:886

約数の個数: 64

約数和(自身を含む): 53395200

約数和(自身を除く): 31437560

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 29, 40, 46, 58, 92, 115, 116, 145, 184, 230, 232, 290, 460, 580, 667, 823, 920, 1160, 1334, 1646, 2668, 3292, 3335, 4115, 5336, 6584, 6670, 8230, 13340, 16460, 18929, 23867, 26680, 32920, 37858, 47734, 75716, 94645, 95468, 119335, 151432, 189290, 190936, 238670, 378580, 477340, 548941, 757160, 954680, 1097882, 2195764, 2744705, 4391528, 5489410, 10978820, 21957640]

約数ペア:

[(1, 21957640), (2, 10978820), (4, 5489410), (5, 4391528), (8, 2744705), (10, 2195764), (20, 1097882), (23, 954680), (29, 757160), (40, 548941), (46, 477340), (58, 378580), (92, 238670), (115, 190936), (116, 189290), (145, 151432), (184, 119335), (230, 95468), (232, 94645), (290, 75716), (460, 47734), (580, 37858), (667, 32920), (823, 26680), (920, 23867), (1160, 18929), (1334, 16460), (1646, 13340), (2668, 8230), (3292, 6670), (3335, 6584), (4115, 5336)]