20301580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{691}}^1$

素因数の和:826

約数の個数: 48

約数和(自身を含む): 46386144

約数和(自身を除く): 26084564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 113, 130, 226, 260, 452, 565, 691, 1130, 1382, 1469, 2260, 2764, 2938, 3455, 5876, 6910, 7345, 8983, 13820, 14690, 17966, 29380, 35932, 44915, 78083, 89830, 156166, 179660, 312332, 390415, 780830, 1015079, 1561660, 2030158, 4060316, 5075395, 10150790, 20301580]

約数ペア:

[(1, 20301580), (2, 10150790), (4, 5075395), (5, 4060316), (10, 2030158), (13, 1561660), (20, 1015079), (26, 780830), (52, 390415), (65, 312332), (113, 179660), (130, 156166), (226, 89830), (260, 78083), (452, 44915), (565, 35932), (691, 29380), (1130, 17966), (1382, 14690), (1469, 13820), (2260, 8983), (2764, 7345), (2938, 6910), (3455, 5876)]