20802340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4211}}^1$

素因数の和:4252

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 28730780

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4211, 4940, 8422, 16844, 21055, 42110, 54743, 80009, 84220, 109486, 160018, 218972, 273715, 320036, 400045, 547430, 800090, 1040117, 1094860, 1600180, 2080234, 4160468, 5200585, 10401170, 20802340]

約数ペア:

[(1, 20802340), (2, 10401170), (4, 5200585), (5, 4160468), (10, 2080234), (13, 1600180), (19, 1094860), (20, 1040117), (26, 800090), (38, 547430), (52, 400045), (65, 320036), (76, 273715), (95, 218972), (130, 160018), (190, 109486), (247, 84220), (260, 80009), (380, 54743), (494, 42110), (988, 21055), (1235, 16844), (2470, 8422), (4211, 4940)]