1918660

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 4346496

約数和(自身を除く): 2427836

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 97, 115, 172, 194, 215, 230, 388, 430, 460, 485, 860, 970, 989, 1940, 1978, 2231, 3956, 4171, 4462, 4945, 8342, 8924, 9890, 11155, 16684, 19780, 20855, 22310, 41710, 44620, 83420, 95933, 191866, 383732, 479665, 959330, 1918660]

約数ペア:

[(1, 1918660), (2, 959330), (4, 479665), (5, 383732), (10, 191866), (20, 95933), (23, 83420), (43, 44620), (46, 41710), (86, 22310), (92, 20855), (97, 19780), (115, 16684), (172, 11155), (194, 9890), (215, 8924), (230, 8342), (388, 4945), (430, 4462), (460, 4171), (485, 3956), (860, 2231), (970, 1978), (989, 1940)]