19754072

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{769}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 42273000

約数和(自身を除く): 22518928

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 169, 247, 338, 494, 676, 769, 988, 1352, 1538, 1976, 3076, 3211, 6152, 6422, 9997, 12844, 14611, 19994, 25688, 29222, 39988, 58444, 79976, 116888, 129961, 189943, 259922, 379886, 519844, 759772, 1039688, 1519544, 2469259, 4938518, 9877036, 19754072]

約数ペア:

[(1, 19754072), (2, 9877036), (4, 4938518), (8, 2469259), (13, 1519544), (19, 1039688), (26, 759772), (38, 519844), (52, 379886), (76, 259922), (104, 189943), (152, 129961), (169, 116888), (247, 79976), (338, 58444), (494, 39988), (676, 29222), (769, 25688), (988, 19994), (1352, 14611), (1538, 12844), (1976, 9997), (3076, 6422), (3211, 6152)]