16720305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2699}}^1$

素因数の和:2773

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 14383695

約数列:

[1, 3, 5, 7, 15, 21, 35, 59, 105, 177, 295, 413, 885, 1239, 2065, 2699, 6195, 8097, 13495, 18893, 40485, 56679, 94465, 159241, 283395, 477723, 796205, 1114687, 2388615, 3344061, 5573435, 16720305]

約数ペア:

[(1, 16720305), (3, 5573435), (5, 3344061), (7, 2388615), (15, 1114687), (21, 796205), (35, 477723), (59, 283395), (105, 159241), (177, 94465), (295, 56679), (413, 40485), (885, 18893), (1239, 13495), (2065, 8097), (2699, 6195)]