12689960

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1129}}^1$

素因数の和:1421

約数の個数: 32

約数和(自身を含む): 28679400

約数和(自身を除く): 15989440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1129, 1405, 2248, 2258, 2810, 4516, 5620, 5645, 9032, 11240, 11290, 22580, 45160, 317249, 634498, 1268996, 1586245, 2537992, 3172490, 6344980, 12689960]

約数ペア:

[(1, 12689960), (2, 6344980), (4, 3172490), (5, 2537992), (8, 1586245), (10, 1268996), (20, 634498), (40, 317249), (281, 45160), (562, 22580), (1124, 11290), (1129, 11240), (1405, 9032), (2248, 5645), (2258, 5620), (2810, 4516)]