21261480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{3343}}^1$

素因数の和:3410

約数の個数: 64

約数和(自身を含む): 65007360

約数和(自身を除く): 43745880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 53, 60, 106, 120, 159, 212, 265, 318, 424, 530, 636, 795, 1060, 1272, 1590, 2120, 3180, 3343, 6360, 6686, 10029, 13372, 16715, 20058, 26744, 33430, 40116, 50145, 66860, 80232, 100290, 133720, 177179, 200580, 354358, 401160, 531537, 708716, 885895, 1063074, 1417432, 1771790, 2126148, 2657685, 3543580, 4252296, 5315370, 7087160, 10630740, 21261480]

約数ペア:

[(1, 21261480), (2, 10630740), (3, 7087160), (4, 5315370), (5, 4252296), (6, 3543580), (8, 2657685), (10, 2126148), (12, 1771790), (15, 1417432), (20, 1063074), (24, 885895), (30, 708716), (40, 531537), (53, 401160), (60, 354358), (106, 200580), (120, 177179), (159, 133720), (212, 100290), (265, 80232), (318, 66860), (424, 50145), (530, 40116), (636, 33430), (795, 26744), (1060, 20058), (1272, 16715), (1590, 13372), (2120, 10029), (3180, 6686), (3343, 6360)]