20460800

素因数分解:

$2^8\times 5^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:188

約数の個数: 108

約数和(自身を含む): 53225760

約数和(自身を除く): 32764960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 80, 92, 100, 115, 128, 139, 160, 184, 200, 230, 256, 278, 320, 368, 400, 460, 556, 575, 640, 695, 736, 800, 920, 1112, 1150, 1280, 1390, 1472, 1600, 1840, 2224, 2300, 2780, 2944, 3197, 3200, 3475, 3680, 4448, 4600, 5560, 5888, 6394, 6400, 6950, 7360, 8896, 9200, 11120, 12788, 13900, 14720, 15985, 17792, 18400, 22240, 25576, 27800, 29440, 31970, 35584, 36800, 44480, 51152, 55600, 63940, 73600, 79925, 88960, 102304, 111200, 127880, 147200, 159850, 177920, 204608, 222400, 255760, 319700, 409216, 444800, 511520, 639400, 818432, 889600, 1023040, 1278800, 2046080, 2557600, 4092160, 5115200, 10230400, 20460800]

約数ペア:

[(1, 20460800), (2, 10230400), (4, 5115200), (5, 4092160), (8, 2557600), (10, 2046080), (16, 1278800), (20, 1023040), (23, 889600), (25, 818432), (32, 639400), (40, 511520), (46, 444800), (50, 409216), (64, 319700), (80, 255760), (92, 222400), (100, 204608), (115, 177920), (128, 159850), (139, 147200), (160, 127880), (184, 111200), (200, 102304), (230, 88960), (256, 79925), (278, 73600), (320, 63940), (368, 55600), (400, 51152), (460, 44480), (556, 36800), (575, 35584), (640, 31970), (695, 29440), (736, 27800), (800, 25576), (920, 22240), (1112, 18400), (1150, 17792), (1280, 15985), (1390, 14720), (1472, 13900), (1600, 12788), (1840, 11120), (2224, 9200), (2300, 8896), (2780, 7360), (2944, 6950), (3197, 6400), (3200, 6394), (3475, 5888), (3680, 5560), (4448, 4600)]