155539820

素因数分解:

$2^2\times 5^1\times {\mathrm{1901}}^1\times {\mathrm{4091}}^1$

素因数の和:6001

約数の個数: 24

約数和(自身を含む): 326885328

約数和(自身を除く): 171345508

約数列:

[1, 2, 4, 5, 10, 20, 1901, 3802, 4091, 7604, 8182, 9505, 16364, 19010, 20455, 38020, 40910, 81820, 7776991, 15553982, 31107964, 38884955, 77769910, 155539820]

約数ペア:

[(1, 155539820), (2, 77769910), (4, 38884955), (5, 31107964), (10, 15553982), (20, 7776991), (1901, 81820), (3802, 40910), (4091, 38020), (7604, 20455), (8182, 19010), (9505, 16364)]