81464380

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1\times {\mathrm{389}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 176772960

約数和(自身を除く): 95308580

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 283, 370, 389, 566, 740, 778, 1132, 1415, 1556, 1945, 2830, 3890, 5660, 7780, 10471, 14393, 20942, 28786, 41884, 52355, 57572, 71965, 104710, 110087, 143930, 209420, 220174, 287860, 440348, 550435, 1100870, 2201740, 4073219, 8146438, 16292876, 20366095, 40732190, 81464380]

約数ペア:

[(1, 81464380), (2, 40732190), (4, 20366095), (5, 16292876), (10, 8146438), (20, 4073219), (37, 2201740), (74, 1100870), (148, 550435), (185, 440348), (283, 287860), (370, 220174), (389, 209420), (566, 143930), (740, 110087), (778, 104710), (1132, 71965), (1415, 57572), (1556, 52355), (1945, 41884), (2830, 28786), (3890, 20942), (5660, 14393), (7780, 10471)]