20868008

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 25787992

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 79, 89, 106, 158, 178, 212, 316, 356, 371, 424, 553, 623, 632, 712, 742, 1106, 1246, 1484, 2212, 2492, 2968, 4187, 4424, 4717, 4984, 7031, 8374, 9434, 14062, 16748, 18868, 28124, 29309, 33019, 33496, 37736, 49217, 56248, 58618, 66038, 98434, 117236, 132076, 196868, 234472, 264152, 372643, 393736, 745286, 1490572, 2608501, 2981144, 5217002, 10434004, 20868008]

約数ペア:

[(1, 20868008), (2, 10434004), (4, 5217002), (7, 2981144), (8, 2608501), (14, 1490572), (28, 745286), (53, 393736), (56, 372643), (79, 264152), (89, 234472), (106, 196868), (158, 132076), (178, 117236), (212, 98434), (316, 66038), (356, 58618), (371, 56248), (424, 49217), (553, 37736), (623, 33496), (632, 33019), (712, 29309), (742, 28124), (1106, 18868), (1246, 16748), (1484, 14062), (2212, 9434), (2492, 8374), (2968, 7031), (4187, 4984), (4424, 4717)]