128977000

素因数分解:

$2^3\times 5^3\times {\mathrm{101}}^1\times {\mathrm{1277}}^1$

素因数の和:1399

約数の個数: 64

約数和(自身を含む): 305033040

約数和(自身を除く): 176056040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 125, 200, 202, 250, 404, 500, 505, 808, 1000, 1010, 1277, 2020, 2525, 2554, 4040, 5050, 5108, 6385, 10100, 10216, 12625, 12770, 20200, 25250, 25540, 31925, 50500, 51080, 63850, 101000, 127700, 128977, 159625, 255400, 257954, 319250, 515908, 638500, 644885, 1031816, 1277000, 1289770, 2579540, 3224425, 5159080, 6448850, 12897700, 16122125, 25795400, 32244250, 64488500, 128977000]

約数ペア:

[(1, 128977000), (2, 64488500), (4, 32244250), (5, 25795400), (8, 16122125), (10, 12897700), (20, 6448850), (25, 5159080), (40, 3224425), (50, 2579540), (100, 1289770), (101, 1277000), (125, 1031816), (200, 644885), (202, 638500), (250, 515908), (404, 319250), (500, 257954), (505, 255400), (808, 159625), (1000, 128977), (1010, 127700), (1277, 101000), (2020, 63850), (2525, 51080), (2554, 50500), (4040, 31925), (5050, 25540), (5108, 25250), (6385, 20200), (10100, 12770), (10216, 12625)]