20749750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 45287424

約数和(自身を除く): 24537674

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 71, 125, 142, 167, 175, 250, 334, 350, 355, 497, 710, 835, 875, 994, 1169, 1670, 1750, 1775, 2338, 2485, 3550, 4175, 4970, 5845, 8350, 8875, 11690, 11857, 12425, 17750, 20875, 23714, 24850, 29225, 41750, 58450, 59285, 62125, 82999, 118570, 124250, 146125, 165998, 292250, 296425, 414995, 592850, 829990, 1482125, 2074975, 2964250, 4149950, 10374875, 20749750]

約数ペア:

[(1, 20749750), (2, 10374875), (5, 4149950), (7, 2964250), (10, 2074975), (14, 1482125), (25, 829990), (35, 592850), (50, 414995), (70, 296425), (71, 292250), (125, 165998), (142, 146125), (167, 124250), (175, 118570), (250, 82999), (334, 62125), (350, 59285), (355, 58450), (497, 41750), (710, 29225), (835, 24850), (875, 23714), (994, 20875), (1169, 17750), (1670, 12425), (1750, 11857), (1775, 11690), (2338, 8875), (2485, 8350), (3550, 5845), (4175, 4970)]