37981000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2039

約数の個数: 64

約数和(自身を含む): 93600000

約数和(自身を除く): 55619000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 475, 500, 760, 950, 1000, 1900, 1999, 2375, 3800, 3998, 4750, 7996, 9500, 9995, 15992, 19000, 19990, 37981, 39980, 49975, 75962, 79960, 99950, 151924, 189905, 199900, 249875, 303848, 379810, 399800, 499750, 759620, 949525, 999500, 1519240, 1899050, 1999000, 3798100, 4747625, 7596200, 9495250, 18990500, 37981000]

約数ペア:

[(1, 37981000), (2, 18990500), (4, 9495250), (5, 7596200), (8, 4747625), (10, 3798100), (19, 1999000), (20, 1899050), (25, 1519240), (38, 999500), (40, 949525), (50, 759620), (76, 499750), (95, 399800), (100, 379810), (125, 303848), (152, 249875), (190, 199900), (200, 189905), (250, 151924), (380, 99950), (475, 79960), (500, 75962), (760, 49975), (950, 39980), (1000, 37981), (1900, 19990), (1999, 19000), (2375, 15992), (3800, 9995), (3998, 9500), (4750, 7996)]