647974180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{31063}}^1$

素因数の和:31228

約数の個数: 48

約数和(自身を含む): 1565625600

約数和(自身を除く): 917651420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 2086, 2980, 4172, 5215, 10430, 20860, 31063, 62126, 124252, 155315, 217441, 310630, 434882, 621260, 869764, 1087205, 2174410, 4348820, 4628387, 9256774, 18513548, 23141935, 32398709, 46283870, 64797418, 92567740, 129594836, 161993545, 323987090, 647974180]

約数ペア:

[(1, 647974180), (2, 323987090), (4, 161993545), (5, 129594836), (7, 92567740), (10, 64797418), (14, 46283870), (20, 32398709), (28, 23141935), (35, 18513548), (70, 9256774), (140, 4628387), (149, 4348820), (298, 2174410), (596, 1087205), (745, 869764), (1043, 621260), (1490, 434882), (2086, 310630), (2980, 217441), (4172, 155315), (5215, 124252), (10430, 62126), (20860, 31063)]