12720975

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 22617600

約数和(自身を除く): 9896625

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 79, 95, 113, 237, 285, 339, 395, 475, 565, 1185, 1425, 1501, 1695, 1975, 2147, 2825, 4503, 5925, 6441, 7505, 8475, 8927, 10735, 22515, 26781, 32205, 37525, 44635, 53675, 112575, 133905, 161025, 169613, 223175, 508839, 669525, 848065, 2544195, 4240325, 12720975]

約数ペア:

[(1, 12720975), (3, 4240325), (5, 2544195), (15, 848065), (19, 669525), (25, 508839), (57, 223175), (75, 169613), (79, 161025), (95, 133905), (113, 112575), (237, 53675), (285, 44635), (339, 37525), (395, 32205), (475, 26781), (565, 22515), (1185, 10735), (1425, 8927), (1501, 8475), (1695, 7505), (1975, 6441), (2147, 5925), (2825, 4503)]