21643888

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1453}}^1$

素因数の和:1494

約数の個数: 60

約数和(自身を含む): 51384360

約数和(自身を除く): 29740472

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 76, 98, 112, 133, 152, 196, 266, 304, 392, 532, 784, 931, 1064, 1453, 1862, 2128, 2906, 3724, 5812, 7448, 10171, 11624, 14896, 20342, 23248, 27607, 40684, 55214, 71197, 81368, 110428, 142394, 162736, 193249, 220856, 284788, 386498, 441712, 569576, 772996, 1139152, 1352743, 1545992, 2705486, 3091984, 5410972, 10821944, 21643888]

約数ペア:

[(1, 21643888), (2, 10821944), (4, 5410972), (7, 3091984), (8, 2705486), (14, 1545992), (16, 1352743), (19, 1139152), (28, 772996), (38, 569576), (49, 441712), (56, 386498), (76, 284788), (98, 220856), (112, 193249), (133, 162736), (152, 142394), (196, 110428), (266, 81368), (304, 71197), (392, 55214), (532, 40684), (784, 27607), (931, 23248), (1064, 20342), (1453, 14896), (1862, 11624), (2128, 10171), (2906, 7448), (3724, 5812)]