21637295

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{541}}^1$

素因数の和:986

約数の個数: 16

約数和(自身を含む): 27446880

約数和(自身を除く): 5809585

約数列:

[1, 5, 19, 95, 421, 541, 2105, 2705, 7999, 10279, 39995, 51395, 227761, 1138805, 4327459, 21637295]

約数ペア:

[(1, 21637295), (5, 4327459), (19, 1138805), (95, 227761), (421, 51395), (541, 39995), (2105, 10279), (2705, 7999)]