2149743880

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{127657}}^1$

素因数の和:128089

約数の個数: 32

約数和(自身を含む): 4848450840

約数和(自身を除く): 2698706960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 16840, 127657, 255314, 510628, 638285, 1021256, 1276570, 2553140, 5106280, 53743597, 107487194, 214974388, 268717985, 429948776, 537435970, 1074871940, 2149743880]

約数ペア:

[(1, 2149743880), (2, 1074871940), (4, 537435970), (5, 429948776), (8, 268717985), (10, 214974388), (20, 107487194), (40, 53743597), (421, 5106280), (842, 2553140), (1684, 1276570), (2105, 1021256), (3368, 638285), (4210, 510628), (8420, 255314), (16840, 127657)]