261722720

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:306

約数の個数: 192

約数和(自身を含む): 762048000

約数和(自身を除く): 500325280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 160, 190, 196, 224, 245, 251, 266, 280, 304, 343, 380, 392, 490, 502, 532, 560, 608, 665, 686, 760, 784, 931, 980, 1004, 1064, 1120, 1255, 1330, 1372, 1520, 1568, 1715, 1757, 1862, 1960, 2008, 2128, 2510, 2660, 2744, 3040, 3430, 3514, 3724, 3920, 4016, 4256, 4655, 4769, 5020, 5320, 5488, 6517, 6860, 7028, 7448, 7840, 8032, 8785, 9310, 9538, 10040, 10640, 10976, 12299, 13034, 13720, 14056, 14896, 17570, 18620, 19076, 20080, 21280, 23845, 24598, 26068, 27440, 28112, 29792, 32585, 33383, 35140, 37240, 38152, 40160, 47690, 49196, 52136, 54880, 56224, 61495, 65170, 66766, 70280, 74480, 76304, 86093, 95380, 98392, 104272, 122990, 130340, 133532, 140560, 148960, 152608, 166915, 172186, 190760, 196784, 208544, 233681, 245980, 260680, 267064, 281120, 333830, 344372, 381520, 393568, 430465, 467362, 491960, 521360, 534128, 667660, 688744, 763040, 860930, 934724, 983920, 1042720, 1068256, 1168405, 1335320, 1377488, 1635767, 1721860, 1869448, 1967840, 2336810, 2670640, 2754976, 3271534, 3443720, 3738896, 4673620, 5341280, 6543068, 6887440, 7477792, 8178835, 9347240, 13086136, 13774880, 16357670, 18694480, 26172272, 32715340, 37388960, 52344544, 65430680, 130861360, 261722720]

約数ペア:

[(1, 261722720), (2, 130861360), (4, 65430680), (5, 52344544), (7, 37388960), (8, 32715340), (10, 26172272), (14, 18694480), (16, 16357670), (19, 13774880), (20, 13086136), (28, 9347240), (32, 8178835), (35, 7477792), (38, 6887440), (40, 6543068), (49, 5341280), (56, 4673620), (70, 3738896), (76, 3443720), (80, 3271534), (95, 2754976), (98, 2670640), (112, 2336810), (133, 1967840), (140, 1869448), (152, 1721860), (160, 1635767), (190, 1377488), (196, 1335320), (224, 1168405), (245, 1068256), (251, 1042720), (266, 983920), (280, 934724), (304, 860930), (343, 763040), (380, 688744), (392, 667660), (490, 534128), (502, 521360), (532, 491960), (560, 467362), (608, 430465), (665, 393568), (686, 381520), (760, 344372), (784, 333830), (931, 281120), (980, 267064), (1004, 260680), (1064, 245980), (1120, 233681), (1255, 208544), (1330, 196784), (1372, 190760), (1520, 172186), (1568, 166915), (1715, 152608), (1757, 148960), (1862, 140560), (1960, 133532), (2008, 130340), (2128, 122990), (2510, 104272), (2660, 98392), (2744, 95380), (3040, 86093), (3430, 76304), (3514, 74480), (3724, 70280), (3920, 66766), (4016, 65170), (4256, 61495), (4655, 56224), (4769, 54880), (5020, 52136), (5320, 49196), (5488, 47690), (6517, 40160), (6860, 38152), (7028, 37240), (7448, 35140), (7840, 33383), (8032, 32585), (8785, 29792), (9310, 28112), (9538, 27440), (10040, 26068), (10640, 24598), (10976, 23845), (12299, 21280), (13034, 20080), (13720, 19076), (14056, 18620), (14896, 17570)]