19555420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31541}}^1$

素因数の和:31581

約数の個数: 24

約数和(自身を含む): 42392448

約数和(自身を除く): 22837028

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31541, 63082, 126164, 157705, 315410, 630820, 977771, 1955542, 3911084, 4888855, 9777710, 19555420]

約数ペア:

[(1, 19555420), (2, 9777710), (4, 4888855), (5, 3911084), (10, 1955542), (20, 977771), (31, 630820), (62, 315410), (124, 157705), (155, 126164), (310, 63082), (620, 31541)]