20705320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30449}}^1$

素因数の和:30477

約数の個数: 32

約数和(自身を含む): 49329000

約数和(自身を除く): 28623680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30449, 60898, 121796, 152245, 243592, 304490, 517633, 608980, 1035266, 1217960, 2070532, 2588165, 4141064, 5176330, 10352660, 20705320]

約数ペア:

[(1, 20705320), (2, 10352660), (4, 5176330), (5, 4141064), (8, 2588165), (10, 2070532), (17, 1217960), (20, 1035266), (34, 608980), (40, 517633), (68, 304490), (85, 243592), (136, 152245), (170, 121796), (340, 60898), (680, 30449)]