20488195

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1217}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 31102848

約数和(自身を除く): 10614653

約数列:

[1, 5, 7, 13, 35, 37, 65, 91, 185, 259, 455, 481, 1217, 1295, 2405, 3367, 6085, 8519, 15821, 16835, 42595, 45029, 79105, 110747, 225145, 315203, 553735, 585377, 1576015, 2926885, 4097639, 20488195]

約数ペア:

[(1, 20488195), (5, 4097639), (7, 2926885), (13, 1576015), (35, 585377), (37, 553735), (65, 315203), (91, 225145), (185, 110747), (259, 79105), (455, 45029), (481, 42595), (1217, 16835), (1295, 15821), (2405, 8519), (3367, 6085)]