20909000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:160

約数の個数: 128

約数和(自身を含む): 58406400

約数和(自身を除く): 37497400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 29, 35, 40, 50, 56, 58, 70, 100, 103, 116, 125, 140, 145, 175, 200, 203, 206, 232, 250, 280, 290, 350, 406, 412, 500, 515, 580, 700, 721, 725, 812, 824, 875, 1000, 1015, 1030, 1160, 1400, 1442, 1450, 1624, 1750, 2030, 2060, 2575, 2884, 2900, 2987, 3500, 3605, 3625, 4060, 4120, 5075, 5150, 5768, 5800, 5974, 7000, 7210, 7250, 8120, 10150, 10300, 11948, 12875, 14420, 14500, 14935, 18025, 20300, 20600, 20909, 23896, 25375, 25750, 28840, 29000, 29870, 36050, 40600, 41818, 50750, 51500, 59740, 72100, 74675, 83636, 90125, 101500, 103000, 104545, 119480, 144200, 149350, 167272, 180250, 203000, 209090, 298700, 360500, 373375, 418180, 522725, 597400, 721000, 746750, 836360, 1045450, 1493500, 2090900, 2613625, 2987000, 4181800, 5227250, 10454500, 20909000]

約数ペア:

[(1, 20909000), (2, 10454500), (4, 5227250), (5, 4181800), (7, 2987000), (8, 2613625), (10, 2090900), (14, 1493500), (20, 1045450), (25, 836360), (28, 746750), (29, 721000), (35, 597400), (40, 522725), (50, 418180), (56, 373375), (58, 360500), (70, 298700), (100, 209090), (103, 203000), (116, 180250), (125, 167272), (140, 149350), (145, 144200), (175, 119480), (200, 104545), (203, 103000), (206, 101500), (232, 90125), (250, 83636), (280, 74675), (290, 72100), (350, 59740), (406, 51500), (412, 50750), (500, 41818), (515, 40600), (580, 36050), (700, 29870), (721, 29000), (725, 28840), (812, 25750), (824, 25375), (875, 23896), (1000, 20909), (1015, 20600), (1030, 20300), (1160, 18025), (1400, 14935), (1442, 14500), (1450, 14420), (1624, 12875), (1750, 11948), (2030, 10300), (2060, 10150), (2575, 8120), (2884, 7250), (2900, 7210), (2987, 7000), (3500, 5974), (3605, 5800), (3625, 5768), (4060, 5150), (4120, 5075)]