20503000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:158

約数の個数: 128

約数和(自身を含む): 57283200

約数和(自身を除く): 36780200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 29, 35, 40, 50, 56, 58, 70, 100, 101, 116, 125, 140, 145, 175, 200, 202, 203, 232, 250, 280, 290, 350, 404, 406, 500, 505, 580, 700, 707, 725, 808, 812, 875, 1000, 1010, 1015, 1160, 1400, 1414, 1450, 1624, 1750, 2020, 2030, 2525, 2828, 2900, 2929, 3500, 3535, 3625, 4040, 4060, 5050, 5075, 5656, 5800, 5858, 7000, 7070, 7250, 8120, 10100, 10150, 11716, 12625, 14140, 14500, 14645, 17675, 20200, 20300, 20503, 23432, 25250, 25375, 28280, 29000, 29290, 35350, 40600, 41006, 50500, 50750, 58580, 70700, 73225, 82012, 88375, 101000, 101500, 102515, 117160, 141400, 146450, 164024, 176750, 203000, 205030, 292900, 353500, 366125, 410060, 512575, 585800, 707000, 732250, 820120, 1025150, 1464500, 2050300, 2562875, 2929000, 4100600, 5125750, 10251500, 20503000]

約数ペア:

[(1, 20503000), (2, 10251500), (4, 5125750), (5, 4100600), (7, 2929000), (8, 2562875), (10, 2050300), (14, 1464500), (20, 1025150), (25, 820120), (28, 732250), (29, 707000), (35, 585800), (40, 512575), (50, 410060), (56, 366125), (58, 353500), (70, 292900), (100, 205030), (101, 203000), (116, 176750), (125, 164024), (140, 146450), (145, 141400), (175, 117160), (200, 102515), (202, 101500), (203, 101000), (232, 88375), (250, 82012), (280, 73225), (290, 70700), (350, 58580), (404, 50750), (406, 50500), (500, 41006), (505, 40600), (580, 35350), (700, 29290), (707, 29000), (725, 28280), (808, 25375), (812, 25250), (875, 23432), (1000, 20503), (1010, 20300), (1015, 20200), (1160, 17675), (1400, 14645), (1414, 14500), (1450, 14140), (1624, 12625), (1750, 11716), (2020, 10150), (2030, 10100), (2525, 8120), (2828, 7250), (2900, 7070), (2929, 7000), (3500, 5858), (3535, 5800), (3625, 5656), (4040, 5075), (4060, 5050)]