21458612

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 22893388

約数列:

[1, 2, 4, 7, 14, 28, 79, 89, 109, 158, 178, 218, 316, 356, 436, 553, 623, 763, 1106, 1246, 1526, 2212, 2492, 3052, 7031, 8611, 9701, 14062, 17222, 19402, 28124, 34444, 38804, 49217, 60277, 67907, 98434, 120554, 135814, 196868, 241108, 271628, 766379, 1532758, 3065516, 5364653, 10729306, 21458612]

約数ペア:

[(1, 21458612), (2, 10729306), (4, 5364653), (7, 3065516), (14, 1532758), (28, 766379), (79, 271628), (89, 241108), (109, 196868), (158, 135814), (178, 120554), (218, 98434), (316, 67907), (356, 60277), (436, 49217), (553, 38804), (623, 34444), (763, 28124), (1106, 19402), (1246, 17222), (1526, 14062), (2212, 9701), (2492, 8611), (3052, 7031)]