18781784

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^2\times {\mathrm{349}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 41706000

約数和(自身を除く): 22924216

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 349, 434, 698, 868, 961, 1396, 1736, 1922, 2443, 2792, 3844, 4886, 6727, 7688, 9772, 10819, 13454, 19544, 21638, 26908, 43276, 53816, 75733, 86552, 151466, 302932, 335389, 605864, 670778, 1341556, 2347723, 2683112, 4695446, 9390892, 18781784]

約数ペア:

[(1, 18781784), (2, 9390892), (4, 4695446), (7, 2683112), (8, 2347723), (14, 1341556), (28, 670778), (31, 605864), (56, 335389), (62, 302932), (124, 151466), (217, 86552), (248, 75733), (349, 53816), (434, 43276), (698, 26908), (868, 21638), (961, 19544), (1396, 13454), (1736, 10819), (1922, 9772), (2443, 7688), (2792, 6727), (3844, 4886)]