81640060

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{57493}}^1$

素因数の和:57573

約数の個数: 24

約数和(自身を含む): 173861856

約数和(自身を除く): 92221796

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 57493, 114986, 229972, 287465, 574930, 1149860, 4082003, 8164006, 16328012, 20410015, 40820030, 81640060]

約数ペア:

[(1, 81640060), (2, 40820030), (4, 20410015), (5, 16328012), (10, 8164006), (20, 4082003), (71, 1149860), (142, 574930), (284, 287465), (355, 229972), (710, 114986), (1420, 57493)]