30920440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{17977}}^1$

素因数の和:18031

約数の個数: 32

約数和(自身を含む): 71192880

約数和(自身を除く): 40272440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 17977, 35954, 71908, 89885, 143816, 179770, 359540, 719080, 773011, 1546022, 3092044, 3865055, 6184088, 7730110, 15460220, 30920440]

約数ペア:

[(1, 30920440), (2, 15460220), (4, 7730110), (5, 6184088), (8, 3865055), (10, 3092044), (20, 1546022), (40, 773011), (43, 719080), (86, 359540), (172, 179770), (215, 143816), (344, 89885), (430, 71908), (860, 35954), (1720, 17977)]