129217600

素因数分解:

$2^6\times 5^2\times {\mathrm{80761}}^1$

素因数の和:80783

約数の個数: 42

約数和(自身を含む): 317959994

約数和(自身を除く): 188742394

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 80761, 161522, 323044, 403805, 646088, 807610, 1292176, 1615220, 2019025, 2584352, 3230440, 4038050, 5168704, 6460880, 8076100, 12921760, 16152200, 25843520, 32304400, 64608800, 129217600]

約数ペア:

[(1, 129217600), (2, 64608800), (4, 32304400), (5, 25843520), (8, 16152200), (10, 12921760), (16, 8076100), (20, 6460880), (25, 5168704), (32, 4038050), (40, 3230440), (50, 2584352), (64, 2019025), (80, 1615220), (100, 1292176), (160, 807610), (200, 646088), (320, 403805), (400, 323044), (800, 161522), (1600, 80761)]