80642980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{9907}}^1$

素因数の和:9964

約数の個数: 48

約数和(自身を含む): 189758016

約数和(自身を除く): 109115036

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 4070, 8140, 9907, 19814, 39628, 49535, 99070, 108977, 198140, 217954, 366559, 435908, 544885, 733118, 1089770, 1466236, 1832795, 2179540, 3665590, 4032149, 7331180, 8064298, 16128596, 20160745, 40321490, 80642980]

約数ペア:

[(1, 80642980), (2, 40321490), (4, 20160745), (5, 16128596), (10, 8064298), (11, 7331180), (20, 4032149), (22, 3665590), (37, 2179540), (44, 1832795), (55, 1466236), (74, 1089770), (110, 733118), (148, 544885), (185, 435908), (220, 366559), (370, 217954), (407, 198140), (740, 108977), (814, 99070), (1628, 49535), (2035, 39628), (4070, 19814), (8140, 9907)]