19008820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15581}}^1$

素因数の和:15651

約数の個数: 24

約数和(自身を含む): 40575528

約数和(自身を除く): 21566708

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15581, 31162, 62324, 77905, 155810, 311620, 950441, 1900882, 3801764, 4752205, 9504410, 19008820]

約数ペア:

[(1, 19008820), (2, 9504410), (4, 4752205), (5, 3801764), (10, 1900882), (20, 950441), (61, 311620), (122, 155810), (244, 77905), (305, 62324), (610, 31162), (1220, 15581)]