21555508

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 43182720

約数和(自身を除く): 21627212

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 67, 92, 134, 268, 269, 299, 538, 598, 871, 1076, 1196, 1541, 1742, 3082, 3484, 3497, 6164, 6187, 6994, 12374, 13988, 18023, 20033, 24748, 36046, 40066, 72092, 80132, 80431, 160862, 234299, 321724, 414529, 468598, 829058, 937196, 1658116, 5388877, 10777754, 21555508]

約数ペア:

[(1, 21555508), (2, 10777754), (4, 5388877), (13, 1658116), (23, 937196), (26, 829058), (46, 468598), (52, 414529), (67, 321724), (92, 234299), (134, 160862), (268, 80431), (269, 80132), (299, 72092), (538, 40066), (598, 36046), (871, 24748), (1076, 20033), (1196, 18023), (1541, 13988), (1742, 12374), (3082, 6994), (3484, 6187), (3497, 6164)]