205571720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{177217}}^1$

素因数の和:177257

約数の個数: 32

約数和(自身を含む): 478488600

約数和(自身を除く): 272916880

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 177217, 354434, 708868, 886085, 1417736, 1772170, 3544340, 5139293, 7088680, 10278586, 20557172, 25696465, 41114344, 51392930, 102785860, 205571720]

約数ペア:

[(1, 205571720), (2, 102785860), (4, 51392930), (5, 41114344), (8, 25696465), (10, 20557172), (20, 10278586), (29, 7088680), (40, 5139293), (58, 3544340), (116, 1772170), (145, 1417736), (232, 886085), (290, 708868), (580, 354434), (1160, 177217)]