15678920

素因数分解:

$2^3\times 5^1\times {\mathrm{593}}^1\times {\mathrm{661}}^1$

素因数の和:1265

約数の個数: 32

約数和(自身を含む): 35390520

約数和(自身を除く): 19711600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 593, 661, 1186, 1322, 2372, 2644, 2965, 3305, 4744, 5288, 5930, 6610, 11860, 13220, 23720, 26440, 391973, 783946, 1567892, 1959865, 3135784, 3919730, 7839460, 15678920]

約数ペア:

[(1, 15678920), (2, 7839460), (4, 3919730), (5, 3135784), (8, 1959865), (10, 1567892), (20, 783946), (40, 391973), (593, 26440), (661, 23720), (1186, 13220), (1322, 11860), (2372, 6610), (2644, 5930), (2965, 5288), (3305, 4744)]