87311980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{1447}}^1$

素因数の和:1894

約数の個数: 48

約数和(自身を含む): 210180096

約数和(自身を除く): 122868116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 431, 862, 1447, 1724, 2155, 2894, 3017, 4310, 5788, 6034, 7235, 8620, 10129, 12068, 14470, 15085, 20258, 28940, 30170, 40516, 50645, 60340, 101290, 202580, 623657, 1247314, 2494628, 3118285, 4365599, 6236570, 8731198, 12473140, 17462396, 21827995, 43655990, 87311980]

約数ペア:

[(1, 87311980), (2, 43655990), (4, 21827995), (5, 17462396), (7, 12473140), (10, 8731198), (14, 6236570), (20, 4365599), (28, 3118285), (35, 2494628), (70, 1247314), (140, 623657), (431, 202580), (862, 101290), (1447, 60340), (1724, 50645), (2155, 40516), (2894, 30170), (3017, 28940), (4310, 20258), (5788, 15085), (6034, 14470), (7235, 12068), (8620, 10129)]