81281008

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 172496896

約数和(自身を除く): 91215888

約数列:

[1, 2, 4, 8, 16, 31, 37, 43, 62, 74, 86, 103, 124, 148, 172, 206, 248, 296, 344, 412, 496, 592, 688, 824, 1147, 1333, 1591, 1648, 2294, 2666, 3182, 3193, 3811, 4429, 4588, 5332, 6364, 6386, 7622, 8858, 9176, 10664, 12728, 12772, 15244, 17716, 18352, 21328, 25456, 25544, 30488, 35432, 49321, 51088, 60976, 70864, 98642, 118141, 137299, 163873, 197284, 236282, 274598, 327746, 394568, 472564, 549196, 655492, 789136, 945128, 1098392, 1310984, 1890256, 2196784, 2621968, 5080063, 10160126, 20320252, 40640504, 81281008]

約数ペア:

[(1, 81281008), (2, 40640504), (4, 20320252), (8, 10160126), (16, 5080063), (31, 2621968), (37, 2196784), (43, 1890256), (62, 1310984), (74, 1098392), (86, 945128), (103, 789136), (124, 655492), (148, 549196), (172, 472564), (206, 394568), (248, 327746), (296, 274598), (344, 236282), (412, 197284), (496, 163873), (592, 137299), (688, 118141), (824, 98642), (1147, 70864), (1333, 60976), (1591, 51088), (1648, 49321), (2294, 35432), (2666, 30488), (3182, 25544), (3193, 25456), (3811, 21328), (4429, 18352), (4588, 17716), (5332, 15244), (6364, 12772), (6386, 12728), (7622, 10664), (8858, 9176)]