871309840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{640669}}^1$

素因数の和:640699

約数の個数: 40

約数和(自身を含む): 2144963160

約数和(自身を除く): 1273653320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 640669, 1281338, 2562676, 3203345, 5125352, 6406690, 10250704, 10891373, 12813380, 21782746, 25626760, 43565492, 51253520, 54456865, 87130984, 108913730, 174261968, 217827460, 435654920, 871309840]

約数ペア:

[(1, 871309840), (2, 435654920), (4, 217827460), (5, 174261968), (8, 108913730), (10, 87130984), (16, 54456865), (17, 51253520), (20, 43565492), (34, 25626760), (40, 21782746), (68, 12813380), (80, 10891373), (85, 10250704), (136, 6406690), (170, 5125352), (272, 3203345), (340, 2562676), (680, 1281338), (1360, 640669)]