21986570

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{179}}^1$

素因数の和:430

約数の個数: 32

約数和(自身を含む): 40590720

約数和(自身を除く): 18604150

約数列:

[1, 2, 5, 10, 71, 142, 173, 179, 346, 355, 358, 710, 865, 895, 1730, 1790, 12283, 12709, 24566, 25418, 30967, 61415, 61934, 63545, 122830, 127090, 154835, 309670, 2198657, 4397314, 10993285, 21986570]

約数ペア:

[(1, 21986570), (2, 10993285), (5, 4397314), (10, 2198657), (71, 309670), (142, 154835), (173, 127090), (179, 122830), (346, 63545), (355, 61934), (358, 61415), (710, 30967), (865, 25418), (895, 24566), (1730, 12709), (1790, 12283)]