81311680

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14947}}^1$

素因数の和:14981

約数の個数: 56

約数和(自身を含む): 205026768

約数和(自身を除く): 123715088

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 5440, 14947, 29894, 59788, 74735, 119576, 149470, 239152, 254099, 298940, 478304, 508198, 597880, 956608, 1016396, 1195760, 1270495, 2032792, 2391520, 2540990, 4065584, 4783040, 5081980, 8131168, 10163960, 16262336, 20327920, 40655840, 81311680]

約数ペア:

[(1, 81311680), (2, 40655840), (4, 20327920), (5, 16262336), (8, 10163960), (10, 8131168), (16, 5081980), (17, 4783040), (20, 4065584), (32, 2540990), (34, 2391520), (40, 2032792), (64, 1270495), (68, 1195760), (80, 1016396), (85, 956608), (136, 597880), (160, 508198), (170, 478304), (272, 298940), (320, 254099), (340, 239152), (544, 149470), (680, 119576), (1088, 74735), (1360, 59788), (2720, 29894), (5440, 14947)]