20339020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{571}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 46414368

約数和(自身を除く): 26075348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 571, 685, 1142, 1370, 1781, 2284, 2740, 2855, 3562, 5710, 7124, 7423, 8905, 11420, 14846, 17810, 29692, 35620, 37115, 74230, 78227, 148460, 156454, 312908, 391135, 782270, 1016951, 1564540, 2033902, 4067804, 5084755, 10169510, 20339020]

約数ペア:

[(1, 20339020), (2, 10169510), (4, 5084755), (5, 4067804), (10, 2033902), (13, 1564540), (20, 1016951), (26, 782270), (52, 391135), (65, 312908), (130, 156454), (137, 148460), (260, 78227), (274, 74230), (548, 37115), (571, 35620), (685, 29692), (1142, 17810), (1370, 14846), (1781, 11420), (2284, 8905), (2740, 7423), (2855, 7124), (3562, 5710)]