21960305

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:964

約数の個数: 16

約数和(自身を含む): 27118800

約数和(自身を除く): 5158495

約数列:

[1, 5, 61, 89, 305, 445, 809, 4045, 5429, 27145, 49349, 72001, 246745, 360005, 4392061, 21960305]

約数ペア:

[(1, 21960305), (5, 4392061), (61, 360005), (89, 246745), (305, 72001), (445, 49349), (809, 27145), (4045, 5429)]