66761000

素因数分解:

$2^3\times 5^3\times {\mathrm{101}}^1\times {\mathrm{661}}^1$

素因数の和:783

約数の個数: 64

約数和(自身を含む): 158006160

約数和(自身を除く): 91245160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 125, 200, 202, 250, 404, 500, 505, 661, 808, 1000, 1010, 1322, 2020, 2525, 2644, 3305, 4040, 5050, 5288, 6610, 10100, 12625, 13220, 16525, 20200, 25250, 26440, 33050, 50500, 66100, 66761, 82625, 101000, 132200, 133522, 165250, 267044, 330500, 333805, 534088, 661000, 667610, 1335220, 1669025, 2670440, 3338050, 6676100, 8345125, 13352200, 16690250, 33380500, 66761000]

約数ペア:

[(1, 66761000), (2, 33380500), (4, 16690250), (5, 13352200), (8, 8345125), (10, 6676100), (20, 3338050), (25, 2670440), (40, 1669025), (50, 1335220), (100, 667610), (101, 661000), (125, 534088), (200, 333805), (202, 330500), (250, 267044), (404, 165250), (500, 133522), (505, 132200), (661, 101000), (808, 82625), (1000, 66761), (1010, 66100), (1322, 50500), (2020, 33050), (2525, 26440), (2644, 25250), (3305, 20200), (4040, 16525), (5050, 13220), (5288, 12625), (6610, 10100)]