68206780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{373}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 147780864

約数和(自身を除く): 79574084

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 223, 373, 410, 446, 746, 820, 892, 1115, 1492, 1865, 2230, 3730, 4460, 7460, 9143, 15293, 18286, 30586, 36572, 45715, 61172, 76465, 83179, 91430, 152930, 166358, 182860, 305860, 332716, 415895, 831790, 1663580, 3410339, 6820678, 13641356, 17051695, 34103390, 68206780]

約数ペア:

[(1, 68206780), (2, 34103390), (4, 17051695), (5, 13641356), (10, 6820678), (20, 3410339), (41, 1663580), (82, 831790), (164, 415895), (205, 332716), (223, 305860), (373, 182860), (410, 166358), (446, 152930), (746, 91430), (820, 83179), (892, 76465), (1115, 61172), (1492, 45715), (1865, 36572), (2230, 30586), (3730, 18286), (4460, 15293), (7460, 9143)]