18791320

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4561}}^1$

素因数の和:4675

約数の個数: 32

約数和(自身を含む): 42700320

約数和(自身を除く): 23909000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4561, 9122, 18244, 22805, 36488, 45610, 91220, 182440, 469783, 939566, 1879132, 2348915, 3758264, 4697830, 9395660, 18791320]

約数ペア:

[(1, 18791320), (2, 9395660), (4, 4697830), (5, 3758264), (8, 2348915), (10, 1879132), (20, 939566), (40, 469783), (103, 182440), (206, 91220), (412, 45610), (515, 36488), (824, 22805), (1030, 18244), (2060, 9122), (4120, 4561)]