8408920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 20704320

約数和(自身を除く): 12295400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 103, 104, 130, 157, 206, 260, 314, 412, 515, 520, 628, 785, 824, 1030, 1256, 1339, 1570, 2041, 2060, 2678, 3140, 4082, 4120, 5356, 6280, 6695, 8164, 10205, 10712, 13390, 16171, 16328, 20410, 26780, 32342, 40820, 53560, 64684, 80855, 81640, 129368, 161710, 210223, 323420, 420446, 646840, 840892, 1051115, 1681784, 2102230, 4204460, 8408920]

約数ペア:

[(1, 8408920), (2, 4204460), (4, 2102230), (5, 1681784), (8, 1051115), (10, 840892), (13, 646840), (20, 420446), (26, 323420), (40, 210223), (52, 161710), (65, 129368), (103, 81640), (104, 80855), (130, 64684), (157, 53560), (206, 40820), (260, 32342), (314, 26780), (412, 20410), (515, 16328), (520, 16171), (628, 13390), (785, 10712), (824, 10205), (1030, 8164), (1256, 6695), (1339, 6280), (1570, 5356), (2041, 4120), (2060, 4082), (2678, 3140)]