133845640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{21313}}^1$

素因数の和:21481

約数の個数: 32

約数和(自身を含む): 303085080

約数和(自身を除く): 169239440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 21313, 42626, 85252, 106565, 170504, 213130, 426260, 852520, 3346141, 6692282, 13384564, 16730705, 26769128, 33461410, 66922820, 133845640]

約数ペア:

[(1, 133845640), (2, 66922820), (4, 33461410), (5, 26769128), (8, 16730705), (10, 13384564), (20, 6692282), (40, 3346141), (157, 852520), (314, 426260), (628, 213130), (785, 170504), (1256, 106565), (1570, 85252), (3140, 42626), (6280, 21313)]