208891640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:265

約数の個数: 128

約数和(自身を含む): 518745600

約数和(自身を除く): 309853960

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 31, 37, 40, 58, 62, 74, 116, 124, 145, 148, 155, 157, 185, 232, 248, 290, 296, 310, 314, 370, 580, 620, 628, 740, 785, 899, 1073, 1147, 1160, 1240, 1256, 1480, 1570, 1798, 2146, 2294, 3140, 3596, 4292, 4495, 4553, 4588, 4867, 5365, 5735, 5809, 6280, 7192, 8584, 8990, 9106, 9176, 9734, 10730, 11470, 11618, 17980, 18212, 19468, 21460, 22765, 22940, 23236, 24335, 29045, 33263, 35960, 36424, 38936, 42920, 45530, 45880, 46472, 48670, 58090, 66526, 91060, 97340, 116180, 133052, 141143, 166315, 168461, 180079, 182120, 194680, 232360, 266104, 282286, 332630, 336922, 360158, 564572, 665260, 673844, 705715, 720316, 842305, 900395, 1129144, 1330520, 1347688, 1411430, 1440632, 1684610, 1800790, 2822860, 3369220, 3601580, 5222291, 5645720, 6738440, 7203160, 10444582, 20889164, 26111455, 41778328, 52222910, 104445820, 208891640]

約数ペア:

[(1, 208891640), (2, 104445820), (4, 52222910), (5, 41778328), (8, 26111455), (10, 20889164), (20, 10444582), (29, 7203160), (31, 6738440), (37, 5645720), (40, 5222291), (58, 3601580), (62, 3369220), (74, 2822860), (116, 1800790), (124, 1684610), (145, 1440632), (148, 1411430), (155, 1347688), (157, 1330520), (185, 1129144), (232, 900395), (248, 842305), (290, 720316), (296, 705715), (310, 673844), (314, 665260), (370, 564572), (580, 360158), (620, 336922), (628, 332630), (740, 282286), (785, 266104), (899, 232360), (1073, 194680), (1147, 182120), (1160, 180079), (1240, 168461), (1256, 166315), (1480, 141143), (1570, 133052), (1798, 116180), (2146, 97340), (2294, 91060), (3140, 66526), (3596, 58090), (4292, 48670), (4495, 46472), (4553, 45880), (4588, 45530), (4867, 42920), (5365, 38936), (5735, 36424), (5809, 35960), (6280, 33263), (7192, 29045), (8584, 24335), (8990, 23236), (9106, 22940), (9176, 22765), (9734, 21460), (10730, 19468), (11470, 18212), (11618, 17980)]