21742448

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:274

約数の個数: 80

約数和(自身を含む): 52704960

約数和(自身を除く): 30962512

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 109, 112, 137, 182, 208, 218, 274, 364, 436, 548, 728, 763, 872, 959, 1096, 1417, 1456, 1526, 1744, 1781, 1918, 2192, 2834, 3052, 3562, 3836, 5668, 6104, 7124, 7672, 9919, 11336, 12208, 12467, 14248, 14933, 15344, 19838, 22672, 24934, 28496, 29866, 39676, 49868, 59732, 79352, 99736, 104531, 119464, 158704, 194129, 199472, 209062, 238928, 388258, 418124, 776516, 836248, 1358903, 1553032, 1672496, 2717806, 3106064, 5435612, 10871224, 21742448]

約数ペア:

[(1, 21742448), (2, 10871224), (4, 5435612), (7, 3106064), (8, 2717806), (13, 1672496), (14, 1553032), (16, 1358903), (26, 836248), (28, 776516), (52, 418124), (56, 388258), (91, 238928), (104, 209062), (109, 199472), (112, 194129), (137, 158704), (182, 119464), (208, 104531), (218, 99736), (274, 79352), (364, 59732), (436, 49868), (548, 39676), (728, 29866), (763, 28496), (872, 24934), (959, 22672), (1096, 19838), (1417, 15344), (1456, 14933), (1526, 14248), (1744, 12467), (1781, 12208), (1918, 11336), (2192, 9919), (2834, 7672), (3052, 7124), (3562, 6104), (3836, 5668)]