128933960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103979}}^1$

素因数の和:104021

約数の個数: 32

約数和(自身を含む): 299462400

約数和(自身を除く): 170528440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 103979, 207958, 415916, 519895, 831832, 1039790, 2079580, 3223349, 4159160, 6446698, 12893396, 16116745, 25786792, 32233490, 64466980, 128933960]

約数ペア:

[(1, 128933960), (2, 64466980), (4, 32233490), (5, 25786792), (8, 16116745), (10, 12893396), (20, 6446698), (31, 4159160), (40, 3223349), (62, 2079580), (124, 1039790), (155, 831832), (248, 519895), (310, 415916), (620, 207958), (1240, 103979)]