20448465

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{457}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 34734720

約数和(自身を除く): 14286255

約数列:

[1, 3, 5, 15, 19, 57, 95, 157, 285, 457, 471, 785, 1371, 2285, 2355, 2983, 6855, 8683, 8949, 14915, 26049, 43415, 44745, 71749, 130245, 215247, 358745, 1076235, 1363231, 4089693, 6816155, 20448465]

約数ペア:

[(1, 20448465), (3, 6816155), (5, 4089693), (15, 1363231), (19, 1076235), (57, 358745), (95, 215247), (157, 130245), (285, 71749), (457, 44745), (471, 43415), (785, 26049), (1371, 14915), (2285, 8949), (2355, 8683), (2983, 6855)]