21540195

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5147}}^1$

素因数の和:5192

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 17996445

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 5147, 15441, 25735, 46323, 77205, 138969, 159557, 231615, 478671, 694845, 797785, 1436013, 2393355, 4308039, 7180065, 21540195]

約数ペア:

[(1, 21540195), (3, 7180065), (5, 4308039), (9, 2393355), (15, 1436013), (27, 797785), (31, 694845), (45, 478671), (93, 231615), (135, 159557), (155, 138969), (279, 77205), (465, 46323), (837, 25735), (1395, 15441), (4185, 5147)]