12690920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{28843}}^1$

素因数の和:28865

約数の個数: 32

約数和(自身を含む): 31151520

約数和(自身を除く): 18460600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 28843, 57686, 115372, 144215, 230744, 288430, 317273, 576860, 634546, 1153720, 1269092, 1586365, 2538184, 3172730, 6345460, 12690920]

約数ペア:

[(1, 12690920), (2, 6345460), (4, 3172730), (5, 2538184), (8, 1586365), (10, 1269092), (11, 1153720), (20, 634546), (22, 576860), (40, 317273), (44, 288430), (55, 230744), (88, 144215), (110, 115372), (220, 57686), (440, 28843)]