81690820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{1093}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 178094448

約数和(自身を除く): 96403628

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 101, 148, 185, 202, 370, 404, 505, 740, 1010, 1093, 2020, 2186, 3737, 4372, 5465, 7474, 10930, 14948, 18685, 21860, 37370, 40441, 74740, 80882, 110393, 161764, 202205, 220786, 404410, 441572, 551965, 808820, 1103930, 2207860, 4084541, 8169082, 16338164, 20422705, 40845410, 81690820]

約数ペア:

[(1, 81690820), (2, 40845410), (4, 20422705), (5, 16338164), (10, 8169082), (20, 4084541), (37, 2207860), (74, 1103930), (101, 808820), (148, 551965), (185, 441572), (202, 404410), (370, 220786), (404, 202205), (505, 161764), (740, 110393), (1010, 80882), (1093, 74740), (2020, 40441), (2186, 37370), (3737, 21860), (4372, 18685), (5465, 14948), (7474, 10930)]