21238888

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{593}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 45031140

約数和(自身を除く): 23792252

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 74, 88, 121, 148, 242, 296, 407, 484, 593, 814, 968, 1186, 1628, 2372, 3256, 4477, 4744, 6523, 8954, 13046, 17908, 21941, 26092, 35816, 43882, 52184, 71753, 87764, 143506, 175528, 241351, 287012, 482702, 574024, 965404, 1930808, 2654861, 5309722, 10619444, 21238888]

約数ペア:

[(1, 21238888), (2, 10619444), (4, 5309722), (8, 2654861), (11, 1930808), (22, 965404), (37, 574024), (44, 482702), (74, 287012), (88, 241351), (121, 175528), (148, 143506), (242, 87764), (296, 71753), (407, 52184), (484, 43882), (593, 35816), (814, 26092), (968, 21941), (1186, 17908), (1628, 13046), (2372, 8954), (3256, 6523), (4477, 4744)]