20268480

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:554

約数の個数: 112

約数和(自身を含む): 65983104

約数和(自身を除く): 45714624

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 43, 48, 60, 64, 80, 86, 96, 120, 129, 160, 172, 192, 215, 240, 258, 320, 344, 430, 480, 491, 516, 645, 688, 860, 960, 982, 1032, 1290, 1376, 1473, 1720, 1964, 2064, 2455, 2580, 2752, 2946, 3440, 3928, 4128, 4910, 5160, 5892, 6880, 7365, 7856, 8256, 9820, 10320, 11784, 13760, 14730, 15712, 19640, 20640, 21113, 23568, 29460, 31424, 39280, 41280, 42226, 47136, 58920, 63339, 78560, 84452, 94272, 105565, 117840, 126678, 157120, 168904, 211130, 235680, 253356, 316695, 337808, 422260, 471360, 506712, 633390, 675616, 844520, 1013424, 1266780, 1351232, 1689040, 2026848, 2533560, 3378080, 4053696, 5067120, 6756160, 10134240, 20268480]

約数ペア:

[(1, 20268480), (2, 10134240), (3, 6756160), (4, 5067120), (5, 4053696), (6, 3378080), (8, 2533560), (10, 2026848), (12, 1689040), (15, 1351232), (16, 1266780), (20, 1013424), (24, 844520), (30, 675616), (32, 633390), (40, 506712), (43, 471360), (48, 422260), (60, 337808), (64, 316695), (80, 253356), (86, 235680), (96, 211130), (120, 168904), (129, 157120), (160, 126678), (172, 117840), (192, 105565), (215, 94272), (240, 84452), (258, 78560), (320, 63339), (344, 58920), (430, 47136), (480, 42226), (491, 41280), (516, 39280), (645, 31424), (688, 29460), (860, 23568), (960, 21113), (982, 20640), (1032, 19640), (1290, 15712), (1376, 14730), (1473, 13760), (1720, 11784), (1964, 10320), (2064, 9820), (2455, 8256), (2580, 7856), (2752, 7365), (2946, 6880), (3440, 5892), (3928, 5160), (4128, 4910)]