21550155

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{997}}^1$

素因数の和:1147

約数の個数: 32

約数和(自身を含む): 37939968

約数和(自身を除く): 16389813

約数列:

[1, 3, 5, 11, 15, 33, 55, 131, 165, 393, 655, 997, 1441, 1965, 2991, 4323, 4985, 7205, 10967, 14955, 21615, 32901, 54835, 130607, 164505, 391821, 653035, 1436677, 1959105, 4310031, 7183385, 21550155]

約数ペア:

[(1, 21550155), (3, 7183385), (5, 4310031), (11, 1959105), (15, 1436677), (33, 653035), (55, 391821), (131, 164505), (165, 130607), (393, 54835), (655, 32901), (997, 21615), (1441, 14955), (1965, 10967), (2991, 7205), (4323, 4985)]