18196568

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 37924920

約数和(自身を除く): 19728352

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 169, 172, 313, 338, 344, 559, 626, 676, 1118, 1252, 1352, 2236, 2504, 4069, 4472, 7267, 8138, 13459, 14534, 16276, 26918, 29068, 32552, 52897, 53836, 58136, 105794, 107672, 174967, 211588, 349934, 423176, 699868, 1399736, 2274571, 4549142, 9098284, 18196568]

約数ペア:

[(1, 18196568), (2, 9098284), (4, 4549142), (8, 2274571), (13, 1399736), (26, 699868), (43, 423176), (52, 349934), (86, 211588), (104, 174967), (169, 107672), (172, 105794), (313, 58136), (338, 53836), (344, 52897), (559, 32552), (626, 29068), (676, 26918), (1118, 16276), (1252, 14534), (1352, 13459), (2236, 8138), (2504, 7267), (4069, 4472)]