20955560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30817}}^1$

素因数の和:30845

約数の個数: 32

約数和(自身を含む): 49925160

約数和(自身を除く): 28969600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30817, 61634, 123268, 154085, 246536, 308170, 523889, 616340, 1047778, 1232680, 2095556, 2619445, 4191112, 5238890, 10477780, 20955560]

約数ペア:

[(1, 20955560), (2, 10477780), (4, 5238890), (5, 4191112), (8, 2619445), (10, 2095556), (17, 1232680), (20, 1047778), (34, 616340), (40, 523889), (68, 308170), (85, 246536), (136, 154085), (170, 123268), (340, 61634), (680, 30817)]