19894840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1733}}^1$

素因数の和:1792

約数の個数: 64

約数和(自身を含む): 52436160

約数和(自身を除く): 32541320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 1733, 2296, 2870, 3466, 5740, 6932, 8665, 11480, 12131, 13864, 17330, 24262, 34660, 48524, 60655, 69320, 71053, 97048, 121310, 142106, 242620, 284212, 355265, 485240, 497371, 568424, 710530, 994742, 1421060, 1989484, 2486855, 2842120, 3978968, 4973710, 9947420, 19894840]

約数ペア:

[(1, 19894840), (2, 9947420), (4, 4973710), (5, 3978968), (7, 2842120), (8, 2486855), (10, 1989484), (14, 1421060), (20, 994742), (28, 710530), (35, 568424), (40, 497371), (41, 485240), (56, 355265), (70, 284212), (82, 242620), (140, 142106), (164, 121310), (205, 97048), (280, 71053), (287, 69320), (328, 60655), (410, 48524), (574, 34660), (820, 24262), (1148, 17330), (1435, 13864), (1640, 12131), (1733, 11480), (2296, 8665), (2870, 6932), (3466, 5740)]