161679980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{104987}}^1$

素因数の和:105014

約数の個数: 48

約数和(自身を含む): 423311616

約数和(自身を除く): 261631636

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 104987, 209974, 419948, 524935, 734909, 1049870, 1154857, 1469818, 2099740, 2309714, 2939636, 3674545, 4619428, 5774285, 7349090, 8083999, 11548570, 14698180, 16167998, 23097140, 32335996, 40419995, 80839990, 161679980]

約数ペア:

[(1, 161679980), (2, 80839990), (4, 40419995), (5, 32335996), (7, 23097140), (10, 16167998), (11, 14698180), (14, 11548570), (20, 8083999), (22, 7349090), (28, 5774285), (35, 4619428), (44, 3674545), (55, 2939636), (70, 2309714), (77, 2099740), (110, 1469818), (140, 1154857), (154, 1049870), (220, 734909), (308, 524935), (385, 419948), (770, 209974), (1540, 104987)]