21726237

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{457}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 33239808

約数和(自身を除く): 11513571

約数列:

[1, 3, 13, 23, 39, 53, 69, 159, 299, 457, 689, 897, 1219, 1371, 2067, 3657, 5941, 10511, 15847, 17823, 24221, 31533, 47541, 72663, 136643, 314873, 409929, 557083, 944619, 1671249, 7242079, 21726237]

約数ペア:

[(1, 21726237), (3, 7242079), (13, 1671249), (23, 944619), (39, 557083), (53, 409929), (69, 314873), (159, 136643), (299, 72663), (457, 47541), (689, 31533), (897, 24221), (1219, 17823), (1371, 15847), (2067, 10511), (3657, 5941)]