19781265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8191}}^1$

素因数の和:8229

約数の個数: 32

約数和(自身を含む): 37748736

約数和(自身を除く): 17967471

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8191, 24573, 40955, 57337, 122865, 172011, 188393, 286685, 565179, 860055, 941965, 1318751, 2825895, 3956253, 6593755, 19781265]

約数ペア:

[(1, 19781265), (3, 6593755), (5, 3956253), (7, 2825895), (15, 1318751), (21, 941965), (23, 860055), (35, 565179), (69, 286685), (105, 188393), (115, 172011), (161, 122865), (345, 57337), (483, 40955), (805, 24573), (2415, 8191)]