208761720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:533

約数の個数: 128

約数和(自身を含む): 653184000

約数和(自身を除く): 444422280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 87, 116, 120, 145, 174, 232, 239, 251, 290, 348, 435, 478, 502, 580, 696, 717, 753, 870, 956, 1004, 1160, 1195, 1255, 1434, 1506, 1740, 1912, 2008, 2390, 2510, 2868, 3012, 3480, 3585, 3765, 4780, 5020, 5736, 6024, 6931, 7170, 7279, 7530, 9560, 10040, 13862, 14340, 14558, 15060, 20793, 21837, 27724, 28680, 29116, 30120, 34655, 36395, 41586, 43674, 55448, 58232, 59989, 69310, 72790, 83172, 87348, 103965, 109185, 119978, 138620, 145580, 166344, 174696, 179967, 207930, 218370, 239956, 277240, 291160, 299945, 359934, 415860, 436740, 479912, 599890, 719868, 831720, 873480, 899835, 1199780, 1439736, 1739681, 1799670, 2399560, 3479362, 3599340, 5219043, 6958724, 7198680, 8698405, 10438086, 13917448, 17396810, 20876172, 26095215, 34793620, 41752344, 52190430, 69587240, 104380860, 208761720]

約数ペア:

[(1, 208761720), (2, 104380860), (3, 69587240), (4, 52190430), (5, 41752344), (6, 34793620), (8, 26095215), (10, 20876172), (12, 17396810), (15, 13917448), (20, 10438086), (24, 8698405), (29, 7198680), (30, 6958724), (40, 5219043), (58, 3599340), (60, 3479362), (87, 2399560), (116, 1799670), (120, 1739681), (145, 1439736), (174, 1199780), (232, 899835), (239, 873480), (251, 831720), (290, 719868), (348, 599890), (435, 479912), (478, 436740), (502, 415860), (580, 359934), (696, 299945), (717, 291160), (753, 277240), (870, 239956), (956, 218370), (1004, 207930), (1160, 179967), (1195, 174696), (1255, 166344), (1434, 145580), (1506, 138620), (1740, 119978), (1912, 109185), (2008, 103965), (2390, 87348), (2510, 83172), (2868, 72790), (3012, 69310), (3480, 59989), (3585, 58232), (3765, 55448), (4780, 43674), (5020, 41586), (5736, 36395), (6024, 34655), (6931, 30120), (7170, 29116), (7279, 28680), (7530, 27724), (9560, 21837), (10040, 20793), (13862, 15060), (14340, 14558)]