21243560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40853}}^1$

素因数の和:40877

約数の個数: 32

約数和(自身を含む): 51476040

約数和(自身を除く): 30232480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40853, 81706, 163412, 204265, 326824, 408530, 531089, 817060, 1062178, 1634120, 2124356, 2655445, 4248712, 5310890, 10621780, 21243560]

約数ペア:

[(1, 21243560), (2, 10621780), (4, 5310890), (5, 4248712), (8, 2655445), (10, 2124356), (13, 1634120), (20, 1062178), (26, 817060), (40, 531089), (52, 408530), (65, 326824), (104, 204265), (130, 163412), (260, 81706), (520, 40853)]