20731815

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11813}}^1$

素因数の和:11840

約数の個数: 32

約数和(自身を含む): 39695040

約数和(自身を除く): 18963225

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11813, 35439, 59065, 106317, 153569, 177195, 318951, 460707, 531585, 767845, 1382121, 1594755, 2303535, 4146363, 6910605, 20731815]

約数ペア:

[(1, 20731815), (3, 6910605), (5, 4146363), (9, 2303535), (13, 1594755), (15, 1382121), (27, 767845), (39, 531585), (45, 460707), (65, 318951), (117, 177195), (135, 153569), (195, 106317), (351, 59065), (585, 35439), (1755, 11813)]