39968740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4021}}^1$

素因数の和:4108

約数の個数: 48

約数和(自身を含む): 97300224

約数和(自身を除く): 57331484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4021, 4970, 8042, 9940, 16084, 20105, 28147, 40210, 56294, 80420, 112588, 140735, 281470, 285491, 562940, 570982, 1141964, 1427455, 1998437, 2854910, 3996874, 5709820, 7993748, 9992185, 19984370, 39968740]

約数ペア:

[(1, 39968740), (2, 19984370), (4, 9992185), (5, 7993748), (7, 5709820), (10, 3996874), (14, 2854910), (20, 1998437), (28, 1427455), (35, 1141964), (70, 570982), (71, 562940), (140, 285491), (142, 281470), (284, 140735), (355, 112588), (497, 80420), (710, 56294), (994, 40210), (1420, 28147), (1988, 20105), (2485, 16084), (4021, 9940), (4970, 8042)]