20947706

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{571}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 36324288

約数和(自身を除く): 15376582

約数列:

[1, 2, 13, 17, 26, 34, 83, 166, 221, 442, 571, 1079, 1142, 1411, 2158, 2822, 7423, 9707, 14846, 18343, 19414, 36686, 47393, 94786, 126191, 252382, 616109, 805681, 1232218, 1611362, 10473853, 20947706]

約数ペア:

[(1, 20947706), (2, 10473853), (13, 1611362), (17, 1232218), (26, 805681), (34, 616109), (83, 252382), (166, 126191), (221, 94786), (442, 47393), (571, 36686), (1079, 19414), (1142, 18343), (1411, 14846), (2158, 9707), (2822, 7423)]