81220580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{9833}}^1$

素因数の和:9908

約数の個数: 48

約数和(自身を含む): 198253440

約数和(自身を除く): 117032860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 4130, 8260, 9833, 19666, 39332, 49165, 68831, 98330, 137662, 196660, 275324, 344155, 580147, 688310, 1160294, 1376620, 2320588, 2900735, 4061029, 5801470, 8122058, 11602940, 16244116, 20305145, 40610290, 81220580]

約数ペア:

[(1, 81220580), (2, 40610290), (4, 20305145), (5, 16244116), (7, 11602940), (10, 8122058), (14, 5801470), (20, 4061029), (28, 2900735), (35, 2320588), (59, 1376620), (70, 1160294), (118, 688310), (140, 580147), (236, 344155), (295, 275324), (413, 196660), (590, 137662), (826, 98330), (1180, 68831), (1652, 49165), (2065, 39332), (4130, 19666), (8260, 9833)]