20159020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{463}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 48642048

約数和(自身を除く): 28483028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 311, 463, 622, 926, 1244, 1555, 1852, 2177, 2315, 3110, 3241, 4354, 4630, 6220, 6482, 8708, 9260, 10885, 12964, 16205, 21770, 32410, 43540, 64820, 143993, 287986, 575972, 719965, 1007951, 1439930, 2015902, 2879860, 4031804, 5039755, 10079510, 20159020]

約数ペア:

[(1, 20159020), (2, 10079510), (4, 5039755), (5, 4031804), (7, 2879860), (10, 2015902), (14, 1439930), (20, 1007951), (28, 719965), (35, 575972), (70, 287986), (140, 143993), (311, 64820), (463, 43540), (622, 32410), (926, 21770), (1244, 16205), (1555, 12964), (1852, 10885), (2177, 9260), (2315, 8708), (3110, 6482), (3241, 6220), (4354, 4630)]