71389640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{254963}}^1$

素因数の和:254981

約数の個数: 32

約数和(自身を含む): 183574080

約数和(自身を除く): 112184440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 254963, 509926, 1019852, 1274815, 1784741, 2039704, 2549630, 3569482, 5099260, 7138964, 8923705, 10198520, 14277928, 17847410, 35694820, 71389640]

約数ペア:

[(1, 71389640), (2, 35694820), (4, 17847410), (5, 14277928), (7, 10198520), (8, 8923705), (10, 7138964), (14, 5099260), (20, 3569482), (28, 2549630), (35, 2039704), (40, 1784741), (56, 1274815), (70, 1019852), (140, 509926), (280, 254963)]