19877620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3463}}^1$

素因数の和:3520

約数の個数: 48

約数和(自身を含む): 48883968

約数和(自身を除く): 29006348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3463, 5740, 6926, 13852, 17315, 24241, 34630, 48482, 69260, 96964, 121205, 141983, 242410, 283966, 484820, 567932, 709915, 993881, 1419830, 1987762, 2839660, 3975524, 4969405, 9938810, 19877620]

約数ペア:

[(1, 19877620), (2, 9938810), (4, 4969405), (5, 3975524), (7, 2839660), (10, 1987762), (14, 1419830), (20, 993881), (28, 709915), (35, 567932), (41, 484820), (70, 283966), (82, 242410), (140, 141983), (164, 121205), (205, 96964), (287, 69260), (410, 48482), (574, 34630), (820, 24241), (1148, 17315), (1435, 13852), (2870, 6926), (3463, 5740)]