12720654320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{14455289}}^1$

素因数の和:14455313

約数の個数: 40

約数和(自身を含む): 32264207280

約数和(自身を除く): 19543552960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 14455289, 28910578, 57821156, 72276445, 115642312, 144552890, 159008179, 231284624, 289105780, 318016358, 578211560, 636032716, 795040895, 1156423120, 1272065432, 1590081790, 2544130864, 3180163580, 6360327160, 12720654320]

約数ペア:

[(1, 12720654320), (2, 6360327160), (4, 3180163580), (5, 2544130864), (8, 1590081790), (10, 1272065432), (11, 1156423120), (16, 795040895), (20, 636032716), (22, 578211560), (40, 318016358), (44, 289105780), (55, 231284624), (80, 159008179), (88, 144552890), (110, 115642312), (176, 72276445), (220, 57821156), (440, 28910578), (880, 14455289)]