19856368

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 120

約数和(自身を含む): 49758720

約数和(自身を除く): 29902352

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 31, 38, 43, 49, 56, 62, 76, 86, 98, 112, 124, 133, 152, 172, 196, 217, 248, 266, 301, 304, 344, 392, 434, 496, 532, 589, 602, 688, 784, 817, 868, 931, 1064, 1178, 1204, 1333, 1519, 1634, 1736, 1862, 2107, 2128, 2356, 2408, 2666, 3038, 3268, 3472, 3724, 4123, 4214, 4712, 4816, 5332, 5719, 6076, 6536, 7448, 8246, 8428, 9331, 9424, 10664, 11438, 12152, 13072, 14896, 16492, 16856, 18662, 21328, 22876, 24304, 25327, 28861, 32984, 33712, 37324, 40033, 45752, 50654, 57722, 65317, 65968, 74648, 80066, 91504, 101308, 115444, 130634, 149296, 160132, 177289, 202616, 230888, 261268, 320264, 354578, 405232, 461776, 522536, 640528, 709156, 1045072, 1241023, 1418312, 2482046, 2836624, 4964092, 9928184, 19856368]

約数ペア:

[(1, 19856368), (2, 9928184), (4, 4964092), (7, 2836624), (8, 2482046), (14, 1418312), (16, 1241023), (19, 1045072), (28, 709156), (31, 640528), (38, 522536), (43, 461776), (49, 405232), (56, 354578), (62, 320264), (76, 261268), (86, 230888), (98, 202616), (112, 177289), (124, 160132), (133, 149296), (152, 130634), (172, 115444), (196, 101308), (217, 91504), (248, 80066), (266, 74648), (301, 65968), (304, 65317), (344, 57722), (392, 50654), (434, 45752), (496, 40033), (532, 37324), (589, 33712), (602, 32984), (688, 28861), (784, 25327), (817, 24304), (868, 22876), (931, 21328), (1064, 18662), (1178, 16856), (1204, 16492), (1333, 14896), (1519, 13072), (1634, 12152), (1736, 11438), (1862, 10664), (2107, 9424), (2128, 9331), (2356, 8428), (2408, 8246), (2666, 7448), (3038, 6536), (3268, 6076), (3472, 5719), (3724, 5332), (4123, 4816), (4214, 4712)]