63780440

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4099}}^1$

素因数の和:4499

約数の個数: 32

約数和(自身を含む): 143910000

約数和(自身を除く): 80129560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 4099, 7780, 8198, 15560, 16396, 20495, 32792, 40990, 81980, 163960, 1594511, 3189022, 6378044, 7972555, 12756088, 15945110, 31890220, 63780440]

約数ペア:

[(1, 63780440), (2, 31890220), (4, 15945110), (5, 12756088), (8, 7972555), (10, 6378044), (20, 3189022), (40, 1594511), (389, 163960), (778, 81980), (1556, 40990), (1945, 32792), (3112, 20495), (3890, 16396), (4099, 15560), (7780, 8198)]