524897420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1\times {\mathrm{1999}}^1$

素因数の和:2718

約数の個数: 48

約数和(自身を含む): 1162560000

約数和(自身を除く): 637662580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 691, 1382, 1999, 2764, 3455, 3998, 6910, 7996, 9995, 13129, 13820, 19990, 26258, 37981, 39980, 52516, 65645, 75962, 131290, 151924, 189905, 262580, 379810, 759620, 1381309, 2762618, 5525236, 6906545, 13813090, 26244871, 27626180, 52489742, 104979484, 131224355, 262448710, 524897420]

約数ペア:

[(1, 524897420), (2, 262448710), (4, 131224355), (5, 104979484), (10, 52489742), (19, 27626180), (20, 26244871), (38, 13813090), (76, 6906545), (95, 5525236), (190, 2762618), (380, 1381309), (691, 759620), (1382, 379810), (1999, 262580), (2764, 189905), (3455, 151924), (3998, 131290), (6910, 75962), (7996, 65645), (9995, 52516), (13129, 39980), (13820, 37981), (19990, 26258)]