21438080

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:122

約数の個数: 128

約数和(自身を含む): 56548800

約数和(自身を除く): 35110720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 41, 43, 64, 76, 80, 82, 86, 95, 128, 152, 160, 164, 172, 190, 205, 215, 304, 320, 328, 344, 380, 410, 430, 608, 640, 656, 688, 760, 779, 817, 820, 860, 1216, 1312, 1376, 1520, 1558, 1634, 1640, 1720, 1763, 2432, 2624, 2752, 3040, 3116, 3268, 3280, 3440, 3526, 3895, 4085, 5248, 5504, 6080, 6232, 6536, 6560, 6880, 7052, 7790, 8170, 8815, 12160, 12464, 13072, 13120, 13760, 14104, 15580, 16340, 17630, 24928, 26144, 26240, 27520, 28208, 31160, 32680, 33497, 35260, 49856, 52288, 56416, 62320, 65360, 66994, 70520, 99712, 104576, 112832, 124640, 130720, 133988, 141040, 167485, 225664, 249280, 261440, 267976, 282080, 334970, 498560, 522880, 535952, 564160, 669940, 1071904, 1128320, 1339880, 2143808, 2679760, 4287616, 5359520, 10719040, 21438080]

約数ペア:

[(1, 21438080), (2, 10719040), (4, 5359520), (5, 4287616), (8, 2679760), (10, 2143808), (16, 1339880), (19, 1128320), (20, 1071904), (32, 669940), (38, 564160), (40, 535952), (41, 522880), (43, 498560), (64, 334970), (76, 282080), (80, 267976), (82, 261440), (86, 249280), (95, 225664), (128, 167485), (152, 141040), (160, 133988), (164, 130720), (172, 124640), (190, 112832), (205, 104576), (215, 99712), (304, 70520), (320, 66994), (328, 65360), (344, 62320), (380, 56416), (410, 52288), (430, 49856), (608, 35260), (640, 33497), (656, 32680), (688, 31160), (760, 28208), (779, 27520), (817, 26240), (820, 26144), (860, 24928), (1216, 17630), (1312, 16340), (1376, 15580), (1520, 14104), (1558, 13760), (1634, 13120), (1640, 13072), (1720, 12464), (1763, 12160), (2432, 8815), (2624, 8170), (2752, 7790), (3040, 7052), (3116, 6880), (3268, 6560), (3280, 6536), (3440, 6232), (3526, 6080), (3895, 5504), (4085, 5248)]