21184968

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2683}}^1$

素因数の和:2746

約数の個数: 64

約数和(自身を含む): 61839360

約数和(自身を除く): 40654392

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 47, 56, 84, 94, 141, 168, 188, 282, 329, 376, 564, 658, 987, 1128, 1316, 1974, 2632, 2683, 3948, 5366, 7896, 8049, 10732, 16098, 18781, 21464, 32196, 37562, 56343, 64392, 75124, 112686, 126101, 150248, 225372, 252202, 378303, 450744, 504404, 756606, 882707, 1008808, 1513212, 1765414, 2648121, 3026424, 3530828, 5296242, 7061656, 10592484, 21184968]

約数ペア:

[(1, 21184968), (2, 10592484), (3, 7061656), (4, 5296242), (6, 3530828), (7, 3026424), (8, 2648121), (12, 1765414), (14, 1513212), (21, 1008808), (24, 882707), (28, 756606), (42, 504404), (47, 450744), (56, 378303), (84, 252202), (94, 225372), (141, 150248), (168, 126101), (188, 112686), (282, 75124), (329, 64392), (376, 56343), (564, 37562), (658, 32196), (987, 21464), (1128, 18781), (1316, 16098), (1974, 10732), (2632, 8049), (2683, 7896), (3948, 5366)]