20484789

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{557}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 31497984

約数和(自身を除く): 11013195

約数列:

[1, 3, 13, 23, 39, 41, 69, 123, 299, 533, 557, 897, 943, 1599, 1671, 2829, 7241, 12259, 12811, 21723, 22837, 36777, 38433, 68511, 166543, 296881, 499629, 525251, 890643, 1575753, 6828263, 20484789]

約数ペア:

[(1, 20484789), (3, 6828263), (13, 1575753), (23, 890643), (39, 525251), (41, 499629), (69, 296881), (123, 166543), (299, 68511), (533, 38433), (557, 36777), (897, 22837), (943, 21723), (1599, 12811), (1671, 12259), (2829, 7241)]