21978690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{23633}}^1$

素因数の和:23674

約数の個数: 32

約数和(自身を含む): 54452736

約数和(自身を除く): 32474046

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 155, 186, 310, 465, 930, 23633, 47266, 70899, 118165, 141798, 236330, 354495, 708990, 732623, 1465246, 2197869, 3663115, 4395738, 7326230, 10989345, 21978690]

約数ペア:

[(1, 21978690), (2, 10989345), (3, 7326230), (5, 4395738), (6, 3663115), (10, 2197869), (15, 1465246), (30, 732623), (31, 708990), (62, 354495), (93, 236330), (155, 141798), (186, 118165), (310, 70899), (465, 47266), (930, 23633)]