20708900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 47991720

約数和(自身を除く): 27282820

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 37, 50, 58, 74, 100, 116, 145, 148, 185, 193, 290, 370, 386, 580, 725, 740, 772, 925, 965, 1073, 1450, 1850, 1930, 2146, 2900, 3700, 3860, 4292, 4825, 5365, 5597, 7141, 9650, 10730, 11194, 14282, 19300, 21460, 22388, 26825, 27985, 28564, 35705, 53650, 55970, 71410, 107300, 111940, 139925, 142820, 178525, 207089, 279850, 357050, 414178, 559700, 714100, 828356, 1035445, 2070890, 4141780, 5177225, 10354450, 20708900]

約数ペア:

[(1, 20708900), (2, 10354450), (4, 5177225), (5, 4141780), (10, 2070890), (20, 1035445), (25, 828356), (29, 714100), (37, 559700), (50, 414178), (58, 357050), (74, 279850), (100, 207089), (116, 178525), (145, 142820), (148, 139925), (185, 111940), (193, 107300), (290, 71410), (370, 55970), (386, 53650), (580, 35705), (725, 28564), (740, 27985), (772, 26825), (925, 22388), (965, 21460), (1073, 19300), (1450, 14282), (1850, 11194), (1930, 10730), (2146, 9650), (2900, 7141), (3700, 5597), (3860, 5365), (4292, 4825)]