68869640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{245963}}^1$

素因数の和:245981

約数の個数: 32

約数和(自身を含む): 177094080

約数和(自身を除く): 108224440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 245963, 491926, 983852, 1229815, 1721741, 1967704, 2459630, 3443482, 4919260, 6886964, 8608705, 9838520, 13773928, 17217410, 34434820, 68869640]

約数ペア:

[(1, 68869640), (2, 34434820), (4, 17217410), (5, 13773928), (7, 9838520), (8, 8608705), (10, 6886964), (14, 4919260), (20, 3443482), (28, 2459630), (35, 1967704), (40, 1721741), (56, 1229815), (70, 983852), (140, 491926), (280, 245963)]