51517040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20773}}^1$

素因数の和:20817

約数の個数: 40

約数和(自身を含む): 123646848

約数和(自身を除く): 72129808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 20773, 41546, 83092, 103865, 166184, 207730, 332368, 415460, 643963, 830920, 1287926, 1661840, 2575852, 3219815, 5151704, 6439630, 10303408, 12879260, 25758520, 51517040]

約数ペア:

[(1, 51517040), (2, 25758520), (4, 12879260), (5, 10303408), (8, 6439630), (10, 5151704), (16, 3219815), (20, 2575852), (31, 1661840), (40, 1287926), (62, 830920), (80, 643963), (124, 415460), (155, 332368), (248, 207730), (310, 166184), (496, 103865), (620, 83092), (1240, 41546), (2480, 20773)]