19821431

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{13049}}^1$

素因数の和:13094

約数の個数: 12

約数和(自身を含む): 23803200

約数和(自身を除く): 3981769

約数列:

[1, 7, 31, 49, 217, 1519, 13049, 91343, 404519, 639401, 2831633, 19821431]

約数ペア:

[(1, 19821431), (7, 2831633), (31, 639401), (49, 404519), (217, 91343), (1519, 13049)]