1816580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1489}}^1$

素因数の和:1559

約数の個数: 24

約数和(自身を含む): 3879960

約数和(自身を除く): 2063380

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1489, 2978, 5956, 7445, 14890, 29780, 90829, 181658, 363316, 454145, 908290, 1816580]

約数ペア:

[(1, 1816580), (2, 908290), (4, 454145), (5, 363316), (10, 181658), (20, 90829), (61, 29780), (122, 14890), (244, 7445), (305, 5956), (610, 2978), (1220, 1489)]