13219400

素因数分解:

$2^3\times 5^2\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 31004340

約数和(自身を除く): 17784940

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 157, 200, 314, 421, 628, 785, 842, 1256, 1570, 1684, 2105, 3140, 3368, 3925, 4210, 6280, 7850, 8420, 10525, 15700, 16840, 21050, 31400, 42100, 66097, 84200, 132194, 264388, 330485, 528776, 660970, 1321940, 1652425, 2643880, 3304850, 6609700, 13219400]

約数ペア:

[(1, 13219400), (2, 6609700), (4, 3304850), (5, 2643880), (8, 1652425), (10, 1321940), (20, 660970), (25, 528776), (40, 330485), (50, 264388), (100, 132194), (157, 84200), (200, 66097), (314, 42100), (421, 31400), (628, 21050), (785, 16840), (842, 15700), (1256, 10525), (1570, 8420), (1684, 7850), (2105, 6280), (3140, 4210), (3368, 3925)]