87640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{313}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 226080

約数和(自身を除く): 138440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 313, 626, 1252, 1565, 2191, 2504, 3130, 4382, 6260, 8764, 10955, 12520, 17528, 21910, 43820, 87640]

約数ペア:

[(1, 87640), (2, 43820), (4, 21910), (5, 17528), (7, 12520), (8, 10955), (10, 8764), (14, 6260), (20, 4382), (28, 3130), (35, 2504), (40, 2191), (56, 1565), (70, 1252), (140, 626), (280, 313)]