21485210

素因数分解:

$2^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{6491}}^1$

素因数の和:6829

約数の個数: 16

約数和(自身を含む): 38796192

約数和(自身を除く): 17310982

約数列:

[1, 2, 5, 10, 331, 662, 1655, 3310, 6491, 12982, 32455, 64910, 2148521, 4297042, 10742605, 21485210]

約数ペア:

[(1, 21485210), (2, 10742605), (5, 4297042), (10, 2148521), (331, 64910), (662, 32455), (1655, 12982), (3310, 6491)]