21031776

素因数分解:

$2^5\times 3^2\times {\mathrm{103}}^1\times {\mathrm{709}}^1$

素因数の和:828

約数の個数: 72

約数和(自身を含む): 60474960

約数和(自身を除く): 39443184

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 103, 144, 206, 288, 309, 412, 618, 709, 824, 927, 1236, 1418, 1648, 1854, 2127, 2472, 2836, 3296, 3708, 4254, 4944, 5672, 6381, 7416, 8508, 9888, 11344, 12762, 14832, 17016, 22688, 25524, 29664, 34032, 51048, 68064, 73027, 102096, 146054, 204192, 219081, 292108, 438162, 584216, 657243, 876324, 1168432, 1314486, 1752648, 2336864, 2628972, 3505296, 5257944, 7010592, 10515888, 21031776]

約数ペア:

[(1, 21031776), (2, 10515888), (3, 7010592), (4, 5257944), (6, 3505296), (8, 2628972), (9, 2336864), (12, 1752648), (16, 1314486), (18, 1168432), (24, 876324), (32, 657243), (36, 584216), (48, 438162), (72, 292108), (96, 219081), (103, 204192), (144, 146054), (206, 102096), (288, 73027), (309, 68064), (412, 51048), (618, 34032), (709, 29664), (824, 25524), (927, 22688), (1236, 17016), (1418, 14832), (1648, 12762), (1854, 11344), (2127, 9888), (2472, 8508), (2836, 7416), (3296, 6381), (3708, 5672), (4254, 4944)]