21022300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 49920416

約数和(自身を除く): 28898116

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 103, 130, 157, 206, 260, 314, 325, 412, 515, 628, 650, 785, 1030, 1300, 1339, 1570, 2041, 2060, 2575, 2678, 3140, 3925, 4082, 5150, 5356, 6695, 7850, 8164, 10205, 10300, 13390, 15700, 16171, 20410, 26780, 32342, 33475, 40820, 51025, 64684, 66950, 80855, 102050, 133900, 161710, 204100, 210223, 323420, 404275, 420446, 808550, 840892, 1051115, 1617100, 2102230, 4204460, 5255575, 10511150, 21022300]

約数ペア:

[(1, 21022300), (2, 10511150), (4, 5255575), (5, 4204460), (10, 2102230), (13, 1617100), (20, 1051115), (25, 840892), (26, 808550), (50, 420446), (52, 404275), (65, 323420), (100, 210223), (103, 204100), (130, 161710), (157, 133900), (206, 102050), (260, 80855), (314, 66950), (325, 64684), (412, 51025), (515, 40820), (628, 33475), (650, 32342), (785, 26780), (1030, 20410), (1300, 16171), (1339, 15700), (1570, 13390), (2041, 10300), (2060, 10205), (2575, 8164), (2678, 7850), (3140, 6695), (3925, 5356), (4082, 5150)]