21294638

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:763

約数の個数: 16

約数和(自身を含む): 32460480

約数和(自身を除く): 11165842

約数列:

[1, 2, 101, 202, 271, 389, 542, 778, 27371, 39289, 54742, 78578, 105419, 210838, 10647319, 21294638]

約数ペア:

[(1, 21294638), (2, 10647319), (101, 210838), (202, 105419), (271, 78578), (389, 54742), (542, 39289), (778, 27371)]