7939490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 15528240

約数和(自身を除く): 7588750

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 389, 778, 785, 1570, 1945, 2041, 3890, 4082, 5057, 10114, 10205, 20410, 25285, 50570, 61073, 122146, 305365, 610730, 793949, 1587898, 3969745, 7939490]

約数ペア:

[(1, 7939490), (2, 3969745), (5, 1587898), (10, 793949), (13, 610730), (26, 305365), (65, 122146), (130, 61073), (157, 50570), (314, 25285), (389, 20410), (778, 10205), (785, 10114), (1570, 5057), (1945, 4082), (2041, 3890)]