20088880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1237}}^1$

素因数の和:1286

約数の個数: 80

約数和(自身を含む): 55264320

約数和(自身を除く): 35175440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 203, 232, 280, 290, 406, 464, 560, 580, 812, 1015, 1160, 1237, 1624, 2030, 2320, 2474, 3248, 4060, 4948, 6185, 8120, 8659, 9896, 12370, 16240, 17318, 19792, 24740, 34636, 35873, 43295, 49480, 69272, 71746, 86590, 98960, 138544, 143492, 173180, 179365, 251111, 286984, 346360, 358730, 502222, 573968, 692720, 717460, 1004444, 1255555, 1434920, 2008888, 2511110, 2869840, 4017776, 5022220, 10044440, 20088880]

約数ペア:

[(1, 20088880), (2, 10044440), (4, 5022220), (5, 4017776), (7, 2869840), (8, 2511110), (10, 2008888), (14, 1434920), (16, 1255555), (20, 1004444), (28, 717460), (29, 692720), (35, 573968), (40, 502222), (56, 358730), (58, 346360), (70, 286984), (80, 251111), (112, 179365), (116, 173180), (140, 143492), (145, 138544), (203, 98960), (232, 86590), (280, 71746), (290, 69272), (406, 49480), (464, 43295), (560, 35873), (580, 34636), (812, 24740), (1015, 19792), (1160, 17318), (1237, 16240), (1624, 12370), (2030, 9896), (2320, 8659), (2474, 8120), (3248, 6185), (4060, 4948)]