378981040

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{509}}^1$

素因数の和:790

約数の個数: 80

約数和(自身を含む): 908379360

約数和(自身を除く): 529398320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 227, 328, 410, 454, 509, 656, 820, 908, 1018, 1135, 1640, 1816, 2036, 2270, 2545, 3280, 3632, 4072, 4540, 5090, 8144, 9080, 9307, 10180, 18160, 18614, 20360, 20869, 37228, 40720, 41738, 46535, 74456, 83476, 93070, 104345, 115543, 148912, 166952, 186140, 208690, 231086, 333904, 372280, 417380, 462172, 577715, 744560, 834760, 924344, 1155430, 1669520, 1848688, 2310860, 4621720, 4737263, 9243440, 9474526, 18949052, 23686315, 37898104, 47372630, 75796208, 94745260, 189490520, 378981040]

約数ペア:

[(1, 378981040), (2, 189490520), (4, 94745260), (5, 75796208), (8, 47372630), (10, 37898104), (16, 23686315), (20, 18949052), (40, 9474526), (41, 9243440), (80, 4737263), (82, 4621720), (164, 2310860), (205, 1848688), (227, 1669520), (328, 1155430), (410, 924344), (454, 834760), (509, 744560), (656, 577715), (820, 462172), (908, 417380), (1018, 372280), (1135, 333904), (1640, 231086), (1816, 208690), (2036, 186140), (2270, 166952), (2545, 148912), (3280, 115543), (3632, 104345), (4072, 93070), (4540, 83476), (5090, 74456), (8144, 46535), (9080, 41738), (9307, 40720), (10180, 37228), (18160, 20869), (18614, 20360)]