131242880

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:332

約数の個数: 128

約数和(自身を含む): 339292800

約数和(自身を除く): 208049920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 43, 64, 76, 80, 86, 95, 128, 152, 160, 172, 190, 215, 251, 304, 320, 344, 380, 430, 502, 608, 640, 688, 760, 817, 860, 1004, 1216, 1255, 1376, 1520, 1634, 1720, 2008, 2432, 2510, 2752, 3040, 3268, 3440, 4016, 4085, 4769, 5020, 5504, 6080, 6536, 6880, 8032, 8170, 9538, 10040, 10793, 12160, 13072, 13760, 16064, 16340, 19076, 20080, 21586, 23845, 26144, 27520, 32128, 32680, 38152, 40160, 43172, 47690, 52288, 53965, 65360, 76304, 80320, 86344, 95380, 104576, 107930, 130720, 152608, 160640, 172688, 190760, 205067, 215860, 261440, 305216, 345376, 381520, 410134, 431720, 522880, 610432, 690752, 763040, 820268, 863440, 1025335, 1381504, 1526080, 1640536, 1726880, 2050670, 3052160, 3281072, 3453760, 4101340, 6562144, 6907520, 8202680, 13124288, 16405360, 26248576, 32810720, 65621440, 131242880]

約数ペア:

[(1, 131242880), (2, 65621440), (4, 32810720), (5, 26248576), (8, 16405360), (10, 13124288), (16, 8202680), (19, 6907520), (20, 6562144), (32, 4101340), (38, 3453760), (40, 3281072), (43, 3052160), (64, 2050670), (76, 1726880), (80, 1640536), (86, 1526080), (95, 1381504), (128, 1025335), (152, 863440), (160, 820268), (172, 763040), (190, 690752), (215, 610432), (251, 522880), (304, 431720), (320, 410134), (344, 381520), (380, 345376), (430, 305216), (502, 261440), (608, 215860), (640, 205067), (688, 190760), (760, 172688), (817, 160640), (860, 152608), (1004, 130720), (1216, 107930), (1255, 104576), (1376, 95380), (1520, 86344), (1634, 80320), (1720, 76304), (2008, 65360), (2432, 53965), (2510, 52288), (2752, 47690), (3040, 43172), (3268, 40160), (3440, 38152), (4016, 32680), (4085, 32128), (4769, 27520), (5020, 26144), (5504, 23845), (6080, 21586), (6536, 20080), (6880, 19076), (8032, 16340), (8170, 16064), (9538, 13760), (10040, 13072), (10793, 12160)]