19780728

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2417}}^1$

素因数の和:2468

約数の個数: 64

約数和(自身を含む): 55710720

約数和(自身を除く): 35929992

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 31, 33, 44, 62, 66, 88, 93, 124, 132, 186, 248, 264, 341, 372, 682, 744, 1023, 1364, 2046, 2417, 2728, 4092, 4834, 7251, 8184, 9668, 14502, 19336, 26587, 29004, 53174, 58008, 74927, 79761, 106348, 149854, 159522, 212696, 224781, 299708, 319044, 449562, 599416, 638088, 824197, 899124, 1648394, 1798248, 2472591, 3296788, 4945182, 6593576, 9890364, 19780728]

約数ペア:

[(1, 19780728), (2, 9890364), (3, 6593576), (4, 4945182), (6, 3296788), (8, 2472591), (11, 1798248), (12, 1648394), (22, 899124), (24, 824197), (31, 638088), (33, 599416), (44, 449562), (62, 319044), (66, 299708), (88, 224781), (93, 212696), (124, 159522), (132, 149854), (186, 106348), (248, 79761), (264, 74927), (341, 58008), (372, 53174), (682, 29004), (744, 26587), (1023, 19336), (1364, 14502), (2046, 9668), (2417, 8184), (2728, 7251), (4092, 4834)]