8447780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:129

約数の個数: 96

約数和(自身を含む): 21288960

約数和(自身を除く): 12841180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 43, 44, 47, 55, 76, 86, 94, 95, 110, 172, 188, 190, 209, 215, 220, 235, 380, 418, 430, 470, 473, 517, 817, 836, 860, 893, 940, 946, 1034, 1045, 1634, 1786, 1892, 2021, 2068, 2090, 2365, 2585, 3268, 3572, 4042, 4085, 4180, 4465, 4730, 5170, 8084, 8170, 8930, 8987, 9460, 9823, 10105, 10340, 16340, 17860, 17974, 19646, 20210, 22231, 35948, 38399, 39292, 40420, 44462, 44935, 49115, 76798, 88924, 89870, 98230, 111155, 153596, 179740, 191995, 196460, 222310, 383990, 422389, 444620, 767980, 844778, 1689556, 2111945, 4223890, 8447780]

約数ペア:

[(1, 8447780), (2, 4223890), (4, 2111945), (5, 1689556), (10, 844778), (11, 767980), (19, 444620), (20, 422389), (22, 383990), (38, 222310), (43, 196460), (44, 191995), (47, 179740), (55, 153596), (76, 111155), (86, 98230), (94, 89870), (95, 88924), (110, 76798), (172, 49115), (188, 44935), (190, 44462), (209, 40420), (215, 39292), (220, 38399), (235, 35948), (380, 22231), (418, 20210), (430, 19646), (470, 17974), (473, 17860), (517, 16340), (817, 10340), (836, 10105), (860, 9823), (893, 9460), (940, 8987), (946, 8930), (1034, 8170), (1045, 8084), (1634, 5170), (1786, 4730), (1892, 4465), (2021, 4180), (2068, 4085), (2090, 4042), (2365, 3572), (2585, 3268)]