81448280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{373}}^1$

素因数の和:540

約数の個数: 64

約数和(自身を含む): 189034560

約数和(自身を除く): 107586280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 103, 106, 206, 212, 265, 373, 412, 424, 515, 530, 746, 824, 1030, 1060, 1492, 1865, 2060, 2120, 2984, 3730, 4120, 5459, 7460, 10918, 14920, 19769, 21836, 27295, 38419, 39538, 43672, 54590, 76838, 79076, 98845, 109180, 153676, 158152, 192095, 197690, 218360, 307352, 384190, 395380, 768380, 790760, 1536760, 2036207, 4072414, 8144828, 10181035, 16289656, 20362070, 40724140, 81448280]

約数ペア:

[(1, 81448280), (2, 40724140), (4, 20362070), (5, 16289656), (8, 10181035), (10, 8144828), (20, 4072414), (40, 2036207), (53, 1536760), (103, 790760), (106, 768380), (206, 395380), (212, 384190), (265, 307352), (373, 218360), (412, 197690), (424, 192095), (515, 158152), (530, 153676), (746, 109180), (824, 98845), (1030, 79076), (1060, 76838), (1492, 54590), (1865, 43672), (2060, 39538), (2120, 38419), (2984, 27295), (3730, 21836), (4120, 19769), (5459, 14920), (7460, 10918)]