21238504

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19961}}^1$

素因数の和:19993

約数の個数: 32

約数和(自身を含む): 47908800

約数和(自身を除く): 26670296

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19961, 39922, 79844, 139727, 159688, 279454, 379259, 558908, 758518, 1117816, 1517036, 2654813, 3034072, 5309626, 10619252, 21238504]

約数ペア:

[(1, 21238504), (2, 10619252), (4, 5309626), (7, 3034072), (8, 2654813), (14, 1517036), (19, 1117816), (28, 758518), (38, 558908), (56, 379259), (76, 279454), (133, 159688), (152, 139727), (266, 79844), (532, 39922), (1064, 19961)]