20327920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14947}}^1$

素因数の和:14977

約数の個数: 40

約数和(自身を含む): 50045904

約数和(自身を除く): 29717984

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14947, 29894, 59788, 74735, 119576, 149470, 239152, 254099, 298940, 508198, 597880, 1016396, 1195760, 1270495, 2032792, 2540990, 4065584, 5081980, 10163960, 20327920]

約数ペア:

[(1, 20327920), (2, 10163960), (4, 5081980), (5, 4065584), (8, 2540990), (10, 2032792), (16, 1270495), (17, 1195760), (20, 1016396), (34, 597880), (40, 508198), (68, 298940), (80, 254099), (85, 239152), (136, 149470), (170, 119576), (272, 74735), (340, 59788), (680, 29894), (1360, 14947)]