12856780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15679}}^1$

素因数の和:15729

約数の個数: 24

約数和(自身を含む): 27659520

約数和(自身を除く): 14802740

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 15679, 31358, 62716, 78395, 156790, 313580, 642839, 1285678, 2571356, 3214195, 6428390, 12856780]

約数ペア:

[(1, 12856780), (2, 6428390), (4, 3214195), (5, 2571356), (10, 1285678), (20, 642839), (41, 313580), (82, 156790), (164, 78395), (205, 62716), (410, 31358), (820, 15679)]