21445144

素因数分解:

$2^3\times 7^2\times {\mathrm{227}}^1\times {\mathrm{241}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 47175480

約数和(自身を除く): 25730336

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 227, 241, 392, 454, 482, 908, 964, 1589, 1687, 1816, 1928, 3178, 3374, 6356, 6748, 11123, 11809, 12712, 13496, 22246, 23618, 44492, 47236, 54707, 88984, 94472, 109414, 218828, 382949, 437656, 765898, 1531796, 2680643, 3063592, 5361286, 10722572, 21445144]

約数ペア:

[(1, 21445144), (2, 10722572), (4, 5361286), (7, 3063592), (8, 2680643), (14, 1531796), (28, 765898), (49, 437656), (56, 382949), (98, 218828), (196, 109414), (227, 94472), (241, 88984), (392, 54707), (454, 47236), (482, 44492), (908, 23618), (964, 22246), (1589, 13496), (1687, 12712), (1816, 11809), (1928, 11123), (3178, 6748), (3374, 6356)]