21080494048

素因数分解:

$2^5\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{40289}}^1$

素因数の和:40579

約数の個数: 48

約数和(自身を含む): 42216506640

約数和(自身を除く): 21136012592

約数列:

[1, 2, 4, 8, 16, 32, 83, 166, 197, 332, 394, 664, 788, 1328, 1576, 2656, 3152, 6304, 16351, 32702, 40289, 65404, 80578, 130808, 161156, 261616, 322312, 523232, 644624, 1289248, 3343987, 6687974, 7936933, 13375948, 15873866, 26751896, 31747732, 53503792, 63495464, 107007584, 126990928, 253981856, 658765439, 1317530878, 2635061756, 5270123512, 10540247024, 21080494048]

約数ペア:

[(1, 21080494048), (2, 10540247024), (4, 5270123512), (8, 2635061756), (16, 1317530878), (32, 658765439), (83, 253981856), (166, 126990928), (197, 107007584), (332, 63495464), (394, 53503792), (664, 31747732), (788, 26751896), (1328, 15873866), (1576, 13375948), (2656, 7936933), (3152, 6687974), (6304, 3343987), (16351, 1289248), (32702, 644624), (40289, 523232), (65404, 322312), (80578, 261616), (130808, 161156)]