8561620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 18860688

約数和(自身を除く): 10299068

約数列:

[1, 2, 4, 5, 10, 20, 41, 53, 82, 106, 164, 197, 205, 212, 265, 394, 410, 530, 788, 820, 985, 1060, 1970, 2173, 3940, 4346, 8077, 8692, 10441, 10865, 16154, 20882, 21730, 32308, 40385, 41764, 43460, 52205, 80770, 104410, 161540, 208820, 428081, 856162, 1712324, 2140405, 4280810, 8561620]

約数ペア:

[(1, 8561620), (2, 4280810), (4, 2140405), (5, 1712324), (10, 856162), (20, 428081), (41, 208820), (53, 161540), (82, 104410), (106, 80770), (164, 52205), (197, 43460), (205, 41764), (212, 40385), (265, 32308), (394, 21730), (410, 20882), (530, 16154), (788, 10865), (820, 10441), (985, 8692), (1060, 8077), (1970, 4346), (2173, 3940)]