489883960

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{78007}}^1$

素因数の和:78175

約数の個数: 32

約数和(自身を含む): 1109273760

約数和(自身を除く): 619389800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 78007, 156014, 312028, 390035, 624056, 780070, 1560140, 3120280, 12247099, 24494198, 48988396, 61235495, 97976792, 122470990, 244941980, 489883960]

約数ペア:

[(1, 489883960), (2, 244941980), (4, 122470990), (5, 97976792), (8, 61235495), (10, 48988396), (20, 24494198), (40, 12247099), (157, 3120280), (314, 1560140), (628, 780070), (785, 624056), (1256, 390035), (1570, 312028), (3140, 156014), (6280, 78007)]