20586468

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 56485632

約数和(自身を除く): 35899164

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 157, 196, 223, 294, 314, 446, 471, 588, 628, 669, 892, 942, 1099, 1338, 1561, 1884, 2198, 2676, 3122, 3297, 4396, 4683, 6244, 6594, 7693, 9366, 10927, 13188, 15386, 18732, 21854, 23079, 30772, 32781, 35011, 43708, 46158, 65562, 70022, 92316, 105033, 131124, 140044, 210066, 245077, 420132, 490154, 735231, 980308, 1470462, 1715539, 2940924, 3431078, 5146617, 6862156, 10293234, 20586468]

約数ペア:

[(1, 20586468), (2, 10293234), (3, 6862156), (4, 5146617), (6, 3431078), (7, 2940924), (12, 1715539), (14, 1470462), (21, 980308), (28, 735231), (42, 490154), (49, 420132), (84, 245077), (98, 210066), (147, 140044), (157, 131124), (196, 105033), (223, 92316), (294, 70022), (314, 65562), (446, 46158), (471, 43708), (588, 35011), (628, 32781), (669, 30772), (892, 23079), (942, 21854), (1099, 18732), (1338, 15386), (1561, 13188), (1884, 10927), (2198, 9366), (2676, 7693), (3122, 6594), (3297, 6244), (4396, 4683)]