91379980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{111439}}^1$

素因数の和:111489

約数の個数: 24

約数和(自身を含む): 196580160

約数和(自身を除く): 105200180

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 111439, 222878, 445756, 557195, 1114390, 2228780, 4568999, 9137998, 18275996, 22844995, 45689990, 91379980]

約数ペア:

[(1, 91379980), (2, 45689990), (4, 22844995), (5, 18275996), (10, 9137998), (20, 4568999), (41, 2228780), (82, 1114390), (164, 557195), (205, 445756), (410, 222878), (820, 111439)]