21665276

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 20469124

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 79, 109, 148, 158, 218, 316, 436, 629, 1258, 1343, 1853, 2516, 2686, 2923, 3706, 4033, 5372, 5846, 7412, 8066, 8611, 11692, 16132, 17222, 34444, 49691, 68561, 99382, 137122, 146387, 198764, 274244, 292774, 318607, 585548, 637214, 1274428, 5416319, 10832638, 21665276]

約数ペア:

[(1, 21665276), (2, 10832638), (4, 5416319), (17, 1274428), (34, 637214), (37, 585548), (68, 318607), (74, 292774), (79, 274244), (109, 198764), (148, 146387), (158, 137122), (218, 99382), (316, 68561), (436, 49691), (629, 34444), (1258, 17222), (1343, 16132), (1853, 11692), (2516, 8611), (2686, 8066), (2923, 7412), (3706, 5846), (4033, 5372)]