21235755

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 34898688

約数和(自身を除く): 13662933

約数列:

[1, 3, 5, 15, 101, 107, 131, 303, 321, 393, 505, 535, 655, 1515, 1605, 1965, 10807, 13231, 14017, 32421, 39693, 42051, 54035, 66155, 70085, 162105, 198465, 210255, 1415717, 4247151, 7078585, 21235755]

約数ペア:

[(1, 21235755), (3, 7078585), (5, 4247151), (15, 1415717), (101, 210255), (107, 198465), (131, 162105), (303, 70085), (321, 66155), (393, 54035), (505, 42051), (535, 39693), (655, 32421), (1515, 14017), (1605, 13231), (1965, 10807)]