20538735

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4549}}^1$

素因数の和:4607

約数の個数: 32

約数和(自身を含む): 38438400

約数和(自身を除く): 17899665

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4515, 4549, 13647, 22745, 31843, 68235, 95529, 159215, 195607, 477645, 586821, 978035, 1369249, 2934105, 4107747, 6846245, 20538735]

約数ペア:

[(1, 20538735), (3, 6846245), (5, 4107747), (7, 2934105), (15, 1369249), (21, 978035), (35, 586821), (43, 477645), (105, 195607), (129, 159215), (215, 95529), (301, 68235), (645, 31843), (903, 22745), (1505, 13647), (4515, 4549)]