20399180

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35171}}^1$

素因数の和:35209

約数の個数: 24

約数和(自身を含む): 44316720

約数和(自身を除く): 23917540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 35171, 70342, 140684, 175855, 351710, 703420, 1019959, 2039918, 4079836, 5099795, 10199590, 20399180]

約数ペア:

[(1, 20399180), (2, 10199590), (4, 5099795), (5, 4079836), (10, 2039918), (20, 1019959), (29, 703420), (58, 351710), (116, 175855), (145, 140684), (290, 70342), (580, 35171)]