18696916

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 20421548

約数列:

[1, 2, 4, 7, 14, 28, 43, 53, 86, 106, 172, 212, 293, 301, 371, 586, 602, 742, 1172, 1204, 1484, 2051, 2279, 4102, 4558, 8204, 9116, 12599, 15529, 15953, 25198, 31058, 31906, 50396, 62116, 63812, 88193, 108703, 176386, 217406, 352772, 434812, 667747, 1335494, 2670988, 4674229, 9348458, 18696916]

約数ペア:

[(1, 18696916), (2, 9348458), (4, 4674229), (7, 2670988), (14, 1335494), (28, 667747), (43, 434812), (53, 352772), (86, 217406), (106, 176386), (172, 108703), (212, 88193), (293, 63812), (301, 62116), (371, 50396), (586, 31906), (602, 31058), (742, 25198), (1172, 15953), (1204, 15529), (1484, 12599), (2051, 9116), (2279, 8204), (4102, 4558)]