20997974

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{2273}}^1$

素因数の和:2455

約数の個数: 16

約数和(自身を含む): 32745600

約数和(自身を除く): 11747626

約数列:

[1, 2, 31, 62, 149, 298, 2273, 4546, 4619, 9238, 70463, 140926, 338677, 677354, 10498987, 20997974]

約数ペア:

[(1, 20997974), (2, 10498987), (31, 677354), (62, 338677), (149, 140926), (298, 70463), (2273, 9238), (4546, 4619)]