18480880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21001}}^1$

素因数の和:21025

約数の個数: 40

約数和(自身を含む): 46876464

約数和(自身を除く): 28395584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21001, 42002, 84004, 105005, 168008, 210010, 231011, 336016, 420020, 462022, 840040, 924044, 1155055, 1680080, 1848088, 2310110, 3696176, 4620220, 9240440, 18480880]

約数ペア:

[(1, 18480880), (2, 9240440), (4, 4620220), (5, 3696176), (8, 2310110), (10, 1848088), (11, 1680080), (16, 1155055), (20, 924044), (22, 840040), (40, 462022), (44, 420020), (55, 336016), (80, 231011), (88, 210010), (110, 168008), (176, 105005), (220, 84004), (440, 42002), (880, 21001)]