320719220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{1723}}^1$

素因数の和:2000

約数の個数: 48

約数和(自身を含む): 693379008

約数和(自身を除く): 372659788

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 227, 410, 454, 820, 908, 1135, 1723, 2270, 3446, 4540, 6892, 8615, 9307, 17230, 18614, 34460, 37228, 46535, 70643, 93070, 141286, 186140, 282572, 353215, 391121, 706430, 782242, 1412860, 1564484, 1955605, 3911210, 7822420, 16035961, 32071922, 64143844, 80179805, 160359610, 320719220]

約数ペア:

[(1, 320719220), (2, 160359610), (4, 80179805), (5, 64143844), (10, 32071922), (20, 16035961), (41, 7822420), (82, 3911210), (164, 1955605), (205, 1564484), (227, 1412860), (410, 782242), (454, 706430), (820, 391121), (908, 353215), (1135, 282572), (1723, 186140), (2270, 141286), (3446, 93070), (4540, 70643), (6892, 46535), (8615, 37228), (9307, 34460), (17230, 18614)]