1720940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6619}}^1$

素因数の和:6641

約数の個数: 24

約数和(自身を含む): 3892560

約数和(自身を除く): 2171620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 6619, 13238, 26476, 33095, 66190, 86047, 132380, 172094, 344188, 430235, 860470, 1720940]

約数ペア:

[(1, 1720940), (2, 860470), (4, 430235), (5, 344188), (10, 172094), (13, 132380), (20, 86047), (26, 66190), (52, 33095), (65, 26476), (130, 13238), (260, 6619)]