18457810

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{271}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 39070080

約数和(自身を除く): 20612270

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 139, 245, 271, 278, 490, 542, 695, 973, 1355, 1390, 1897, 1946, 2710, 3794, 4865, 6811, 9485, 9730, 13279, 13622, 18970, 26558, 34055, 37669, 66395, 68110, 75338, 132790, 188345, 263683, 376690, 527366, 1318415, 1845781, 2636830, 3691562, 9228905, 18457810]

約数ペア:

[(1, 18457810), (2, 9228905), (5, 3691562), (7, 2636830), (10, 1845781), (14, 1318415), (35, 527366), (49, 376690), (70, 263683), (98, 188345), (139, 132790), (245, 75338), (271, 68110), (278, 66395), (490, 37669), (542, 34055), (695, 26558), (973, 18970), (1355, 13622), (1390, 13279), (1897, 9730), (1946, 9485), (2710, 6811), (3794, 4865)]