208047760

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{307}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 499093056

約数和(自身を除く): 291045296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 197, 215, 307, 344, 394, 430, 614, 688, 788, 860, 985, 1228, 1535, 1576, 1720, 1970, 2456, 3070, 3152, 3440, 3940, 4912, 6140, 7880, 8471, 12280, 13201, 15760, 16942, 24560, 26402, 33884, 42355, 52804, 60479, 66005, 67768, 84710, 105608, 120958, 132010, 135536, 169420, 211216, 241916, 264020, 302395, 338840, 483832, 528040, 604790, 677680, 967664, 1056080, 1209580, 2419160, 2600597, 4838320, 5201194, 10402388, 13002985, 20804776, 26005970, 41609552, 52011940, 104023880, 208047760]

約数ペア:

[(1, 208047760), (2, 104023880), (4, 52011940), (5, 41609552), (8, 26005970), (10, 20804776), (16, 13002985), (20, 10402388), (40, 5201194), (43, 4838320), (80, 2600597), (86, 2419160), (172, 1209580), (197, 1056080), (215, 967664), (307, 677680), (344, 604790), (394, 528040), (430, 483832), (614, 338840), (688, 302395), (788, 264020), (860, 241916), (985, 211216), (1228, 169420), (1535, 135536), (1576, 132010), (1720, 120958), (1970, 105608), (2456, 84710), (3070, 67768), (3152, 66005), (3440, 60479), (3940, 52804), (4912, 42355), (6140, 33884), (7880, 26402), (8471, 24560), (12280, 16942), (13201, 15760)]