18863884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 38157280

約数和(自身を除く): 19293396

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 61, 76, 122, 244, 247, 313, 494, 626, 793, 988, 1159, 1252, 1586, 2318, 3172, 4069, 4636, 5947, 8138, 11894, 15067, 16276, 19093, 23788, 30134, 38186, 60268, 76372, 77311, 154622, 248209, 309244, 362767, 496418, 725534, 992836, 1451068, 4715971, 9431942, 18863884]

約数ペア:

[(1, 18863884), (2, 9431942), (4, 4715971), (13, 1451068), (19, 992836), (26, 725534), (38, 496418), (52, 362767), (61, 309244), (76, 248209), (122, 154622), (244, 77311), (247, 76372), (313, 60268), (494, 38186), (626, 30134), (793, 23788), (988, 19093), (1159, 16276), (1252, 15067), (1586, 11894), (2318, 8138), (3172, 5947), (4069, 4636)]