20563880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30241}}^1$

素因数の和:30269

約数の個数: 32

約数和(自身を含む): 48992040

約数和(自身を除く): 28428160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30241, 60482, 120964, 151205, 241928, 302410, 514097, 604820, 1028194, 1209640, 2056388, 2570485, 4112776, 5140970, 10281940, 20563880]

約数ペア:

[(1, 20563880), (2, 10281940), (4, 5140970), (5, 4112776), (8, 2570485), (10, 2056388), (17, 1209640), (20, 1028194), (34, 604820), (40, 514097), (68, 302410), (85, 241928), (136, 151205), (170, 120964), (340, 60482), (680, 30241)]