19123975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{163}}^1$

素因数の和:224

約数の個数: 36

約数和(自身を含む): 27118056

約数和(自身を除く): 7994081

約数列:

[1, 5, 13, 19, 25, 65, 95, 163, 247, 325, 361, 475, 815, 1235, 1805, 2119, 3097, 4075, 4693, 6175, 9025, 10595, 15485, 23465, 40261, 52975, 58843, 77425, 117325, 201305, 294215, 764959, 1006525, 1471075, 3824795, 19123975]

約数ペア:

[(1, 19123975), (5, 3824795), (13, 1471075), (19, 1006525), (25, 764959), (65, 294215), (95, 201305), (163, 117325), (247, 77425), (325, 58843), (361, 52975), (475, 40261), (815, 23465), (1235, 15485), (1805, 10595), (2119, 9025), (3097, 6175), (4075, 4693)]