21139402

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1\times {\mathrm{659}}^1$

素因数の和:1077

約数の個数: 16

約数和(自身を含む): 32582880

約数和(自身を除く): 11443478

約数列:

[1, 2, 43, 86, 373, 659, 746, 1318, 16039, 28337, 32078, 56674, 245807, 491614, 10569701, 21139402]

約数ペア:

[(1, 21139402), (2, 10569701), (43, 491614), (86, 245807), (373, 56674), (659, 32078), (746, 28337), (1318, 16039)]