21608615

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1579}}^1$

素因数の和:1631

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 11154265

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 391, 595, 805, 1579, 1955, 2737, 7895, 11053, 13685, 26843, 36317, 55265, 134215, 181585, 187901, 254219, 617389, 939505, 1271095, 3086945, 4321723, 21608615]

約数ペア:

[(1, 21608615), (5, 4321723), (7, 3086945), (17, 1271095), (23, 939505), (35, 617389), (85, 254219), (115, 187901), (119, 181585), (161, 134215), (391, 55265), (595, 36317), (805, 26843), (1579, 13685), (1955, 11053), (2737, 7895)]