77419820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{54521}}^1$

素因数の和:54601

約数の個数: 24

約数和(自身を含む): 164874528

約数和(自身を除く): 87454708

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 54521, 109042, 218084, 272605, 545210, 1090420, 3870991, 7741982, 15483964, 19354955, 38709910, 77419820]

約数ペア:

[(1, 77419820), (2, 38709910), (4, 19354955), (5, 15483964), (10, 7741982), (20, 3870991), (71, 1090420), (142, 545210), (284, 272605), (355, 218084), (710, 109042), (1420, 54521)]