40984720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{449}}^1$

素因数の和:632

約数の個数: 80

約数和(自身を含む): 109814400

約数和(自身を除く): 68829680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 163, 280, 326, 449, 560, 652, 815, 898, 1141, 1304, 1630, 1796, 2245, 2282, 2608, 3143, 3260, 3592, 4490, 4564, 5705, 6286, 6520, 7184, 8980, 9128, 11410, 12572, 13040, 15715, 17960, 18256, 22820, 25144, 31430, 35920, 45640, 50288, 62860, 73187, 91280, 125720, 146374, 251440, 292748, 365935, 512309, 585496, 731870, 1024618, 1170992, 1463740, 2049236, 2561545, 2927480, 4098472, 5123090, 5854960, 8196944, 10246180, 20492360, 40984720]

約数ペア:

[(1, 40984720), (2, 20492360), (4, 10246180), (5, 8196944), (7, 5854960), (8, 5123090), (10, 4098472), (14, 2927480), (16, 2561545), (20, 2049236), (28, 1463740), (35, 1170992), (40, 1024618), (56, 731870), (70, 585496), (80, 512309), (112, 365935), (140, 292748), (163, 251440), (280, 146374), (326, 125720), (449, 91280), (560, 73187), (652, 62860), (815, 50288), (898, 45640), (1141, 35920), (1304, 31430), (1630, 25144), (1796, 22820), (2245, 18256), (2282, 17960), (2608, 15715), (3143, 13040), (3260, 12572), (3592, 11410), (4490, 9128), (4564, 8980), (5705, 7184), (6286, 6520)]