81221965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{11273}}^1$

素因数の和:11420

約数の個数: 16

約数和(自身を含む): 107148096

約数和(自身を除く): 25926131

約数列:

[1, 5, 11, 55, 131, 655, 1441, 7205, 11273, 56365, 124003, 620015, 1476763, 7383815, 16244393, 81221965]

約数ペア:

[(1, 81221965), (5, 16244393), (11, 7383815), (55, 1476763), (131, 620015), (655, 124003), (1441, 56365), (7205, 11273)]