21376311

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 33146880

約数和(自身を除く): 11770569

約数列:

[1, 3, 11, 19, 33, 57, 103, 209, 309, 331, 627, 993, 1133, 1957, 3399, 3641, 5871, 6289, 10923, 18867, 21527, 34093, 64581, 69179, 102279, 207537, 375023, 647767, 1125069, 1943301, 7125437, 21376311]

約数ペア:

[(1, 21376311), (3, 7125437), (11, 1943301), (19, 1125069), (33, 647767), (57, 375023), (103, 207537), (209, 102279), (309, 69179), (331, 64581), (627, 34093), (993, 21527), (1133, 18867), (1957, 10923), (3399, 6289), (3641, 5871)]