1440740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 3556224

約数和(自身を除く): 2115484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 251, 287, 410, 502, 574, 820, 1004, 1148, 1255, 1435, 1757, 2510, 2870, 3514, 5020, 5740, 7028, 8785, 10291, 17570, 20582, 35140, 41164, 51455, 72037, 102910, 144074, 205820, 288148, 360185, 720370, 1440740]

約数ペア:

[(1, 1440740), (2, 720370), (4, 360185), (5, 288148), (7, 205820), (10, 144074), (14, 102910), (20, 72037), (28, 51455), (35, 41164), (41, 35140), (70, 20582), (82, 17570), (140, 10291), (164, 8785), (205, 7028), (251, 5740), (287, 5020), (410, 3514), (502, 2870), (574, 2510), (820, 1757), (1004, 1435), (1148, 1255)]