646997680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{4603}}^1$

素因数の和:4874

約数の個数: 80

約数和(自身を含む): 1726389504

約数和(自身を除く): 1079391824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 251, 280, 502, 560, 1004, 1255, 1757, 2008, 2510, 3514, 4016, 4603, 5020, 7028, 8785, 9206, 10040, 14056, 17570, 18412, 20080, 23015, 28112, 32221, 35140, 36824, 46030, 64442, 70280, 73648, 92060, 128884, 140560, 161105, 184120, 257768, 322210, 368240, 515536, 644420, 1155353, 1288840, 2310706, 2577680, 4621412, 5776765, 8087471, 9242824, 11553530, 16174942, 18485648, 23107060, 32349884, 40437355, 46214120, 64699768, 80874710, 92428240, 129399536, 161749420, 323498840, 646997680]

約数ペア:

[(1, 646997680), (2, 323498840), (4, 161749420), (5, 129399536), (7, 92428240), (8, 80874710), (10, 64699768), (14, 46214120), (16, 40437355), (20, 32349884), (28, 23107060), (35, 18485648), (40, 16174942), (56, 11553530), (70, 9242824), (80, 8087471), (112, 5776765), (140, 4621412), (251, 2577680), (280, 2310706), (502, 1288840), (560, 1155353), (1004, 644420), (1255, 515536), (1757, 368240), (2008, 322210), (2510, 257768), (3514, 184120), (4016, 161105), (4603, 140560), (5020, 128884), (7028, 92060), (8785, 73648), (9206, 70280), (10040, 64442), (14056, 46030), (17570, 36824), (18412, 35140), (20080, 32221), (23015, 28112)]