20861364580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1123}}^1\times {\mathrm{132689}}^1$

素因数の和:133828

約数の個数: 48

約数和(自身を含む): 50112236160

約数和(自身を除く): 29250871580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1123, 2246, 4492, 5615, 7861, 11230, 15722, 22460, 31444, 39305, 78610, 132689, 157220, 265378, 530756, 663445, 928823, 1326890, 1857646, 2653780, 3715292, 4644115, 9288230, 18576460, 149009747, 298019494, 596038988, 745048735, 1043068229, 1490097470, 2086136458, 2980194940, 4172272916, 5215341145, 10430682290, 20861364580]

約数ペア:

[(1, 20861364580), (2, 10430682290), (4, 5215341145), (5, 4172272916), (7, 2980194940), (10, 2086136458), (14, 1490097470), (20, 1043068229), (28, 745048735), (35, 596038988), (70, 298019494), (140, 149009747), (1123, 18576460), (2246, 9288230), (4492, 4644115), (5615, 3715292), (7861, 2653780), (11230, 1857646), (15722, 1326890), (22460, 928823), (31444, 663445), (39305, 530756), (78610, 265378), (132689, 157220)]