2180140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1787}}^1$

素因数の和:1857

約数の個数: 24

約数和(自身を含む): 4655952

約数和(自身を除く): 2475812

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1787, 3574, 7148, 8935, 17870, 35740, 109007, 218014, 436028, 545035, 1090070, 2180140]

約数ペア:

[(1, 2180140), (2, 1090070), (4, 545035), (5, 436028), (10, 218014), (20, 109007), (61, 35740), (122, 17870), (244, 8935), (305, 7148), (610, 3574), (1220, 1787)]