2643880

素因数分解:

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

素因数の和:589

約数の個数: 32

約数和(自身を含む): 6000840

約数和(自身を除く): 3356960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 421, 628, 785, 842, 1256, 1570, 1684, 2105, 3140, 3368, 4210, 6280, 8420, 16840, 66097, 132194, 264388, 330485, 528776, 660970, 1321940, 2643880]

約数ペア:

[(1, 2643880), (2, 1321940), (4, 660970), (5, 528776), (8, 330485), (10, 264388), (20, 132194), (40, 66097), (157, 16840), (314, 8420), (421, 6280), (628, 4210), (785, 3368), (842, 3140), (1256, 2105), (1570, 1684)]