21261700

素因数分解:

$2^2\times 5^2\times {\mathrm{173}}^1\times {\mathrm{1229}}^1$

素因数の和:1416

約数の個数: 36

約数和(自身を含む): 46442340

約数和(自身を除く): 25180640

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 173, 346, 692, 865, 1229, 1730, 2458, 3460, 4325, 4916, 6145, 8650, 12290, 17300, 24580, 30725, 61450, 122900, 212617, 425234, 850468, 1063085, 2126170, 4252340, 5315425, 10630850, 21261700]

約数ペア:

[(1, 21261700), (2, 10630850), (4, 5315425), (5, 4252340), (10, 2126170), (20, 1063085), (25, 850468), (50, 425234), (100, 212617), (173, 122900), (346, 61450), (692, 30725), (865, 24580), (1229, 17300), (1730, 12290), (2458, 8650), (3460, 6145), (4325, 4916)]