28677040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1249}}^1$

素因数の和:1310

約数の個数: 80

約数和(自身を含む): 78120000

約数和(自身を除く): 49442960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 1148, 1249, 1435, 1640, 2296, 2498, 2870, 3280, 4592, 4996, 5740, 6245, 8743, 9992, 11480, 12490, 17486, 19984, 22960, 24980, 34972, 43715, 49960, 51209, 69944, 87430, 99920, 102418, 139888, 174860, 204836, 256045, 349720, 358463, 409672, 512090, 699440, 716926, 819344, 1024180, 1433852, 1792315, 2048360, 2867704, 3584630, 4096720, 5735408, 7169260, 14338520, 28677040]

約数ペア:

[(1, 28677040), (2, 14338520), (4, 7169260), (5, 5735408), (7, 4096720), (8, 3584630), (10, 2867704), (14, 2048360), (16, 1792315), (20, 1433852), (28, 1024180), (35, 819344), (40, 716926), (41, 699440), (56, 512090), (70, 409672), (80, 358463), (82, 349720), (112, 256045), (140, 204836), (164, 174860), (205, 139888), (280, 102418), (287, 99920), (328, 87430), (410, 69944), (560, 51209), (574, 49960), (656, 43715), (820, 34972), (1148, 24980), (1249, 22960), (1435, 19984), (1640, 17486), (2296, 12490), (2498, 11480), (2870, 9992), (3280, 8743), (4592, 6245), (4996, 5740)]