20451738385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{491}}^1\times {\mathrm{2659}}^1$

素因数の和:3409

約数の個数: 32

約数和(自身を含む): 26603660160

約数和(自身を除く): 6151921775

約数列:

[1, 5, 13, 65, 241, 491, 1205, 2455, 2659, 3133, 6383, 13295, 15665, 31915, 34567, 118331, 172835, 591655, 640819, 1305569, 1538303, 3204095, 6527845, 7691515, 8330647, 16972397, 41653235, 84861985, 314642129, 1573210645, 4090347677, 20451738385]

約数ペア:

[(1, 20451738385), (5, 4090347677), (13, 1573210645), (65, 314642129), (241, 84861985), (491, 41653235), (1205, 16972397), (2455, 8330647), (2659, 7691515), (3133, 6527845), (6383, 3204095), (13295, 1538303), (15665, 1305569), (31915, 640819), (34567, 591655), (118331, 172835)]