18986192

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:363

約数の個数: 40

約数和(自身を含む): 37944000

約数和(自身を除く): 18957808

約数列:

[1, 2, 4, 8, 16, 67, 89, 134, 178, 199, 268, 356, 398, 536, 712, 796, 1072, 1424, 1592, 3184, 5963, 11926, 13333, 17711, 23852, 26666, 35422, 47704, 53332, 70844, 95408, 106664, 141688, 213328, 283376, 1186637, 2373274, 4746548, 9493096, 18986192]

約数ペア:

[(1, 18986192), (2, 9493096), (4, 4746548), (8, 2373274), (16, 1186637), (67, 283376), (89, 213328), (134, 141688), (178, 106664), (199, 95408), (268, 70844), (356, 53332), (398, 47704), (536, 35422), (712, 26666), (796, 23852), (1072, 17711), (1424, 13333), (1592, 11926), (3184, 5963)]