8553220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{491}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 19672128

約数和(自身を除く): 11118908

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 491, 670, 871, 982, 1340, 1742, 1964, 2455, 3484, 4355, 4910, 6383, 8710, 9820, 12766, 17420, 25532, 31915, 32897, 63830, 65794, 127660, 131588, 164485, 328970, 427661, 657940, 855322, 1710644, 2138305, 4276610, 8553220]

約数ペア:

[(1, 8553220), (2, 4276610), (4, 2138305), (5, 1710644), (10, 855322), (13, 657940), (20, 427661), (26, 328970), (52, 164485), (65, 131588), (67, 127660), (130, 65794), (134, 63830), (260, 32897), (268, 31915), (335, 25532), (491, 17420), (670, 12766), (871, 9820), (982, 8710), (1340, 6383), (1742, 4910), (1964, 4355), (2455, 3484)]