21407758

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{809}}^1$

素因数の和:1043

約数の個数: 16

約数和(自身を含む): 32717520

約数和(自身を除く): 11309762

約数列:

[1, 2, 101, 131, 202, 262, 809, 1618, 13231, 26462, 81709, 105979, 163418, 211958, 10703879, 21407758]

約数ペア:

[(1, 21407758), (2, 10703879), (101, 211958), (131, 163418), (202, 105979), (262, 81709), (809, 26462), (1618, 13231)]