21421777185

素因数分解:

$3^4\times 5^1\times {\mathrm{557}}^1\times {\mathrm{94961}}^1$

素因数の和:95535

約数の個数: 40

約数和(自身を含む): 38469865896

約数和(自身を除く): 17048088711

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 557, 1671, 2785, 5013, 8355, 15039, 25065, 45117, 75195, 94961, 225585, 284883, 474805, 854649, 1424415, 2563947, 4273245, 7691841, 12819735, 38459205, 52893277, 158679831, 264466385, 476039493, 793399155, 1428118479, 2380197465, 4284355437, 7140592395, 21421777185]

約数ペア:

[(1, 21421777185), (3, 7140592395), (5, 4284355437), (9, 2380197465), (15, 1428118479), (27, 793399155), (45, 476039493), (81, 264466385), (135, 158679831), (405, 52893277), (557, 38459205), (1671, 12819735), (2785, 7691841), (5013, 4273245), (8355, 2563947), (15039, 1424415), (25065, 854649), (45117, 474805), (75195, 284883), (94961, 225585)]