217871475

素因数分解:

$3^1\times 5^2\times {\mathrm{313}}^1\times {\mathrm{9281}}^1$

素因数の和:9607

約数の個数: 24

約数和(自身を含む): 361403952

約数和(自身を除く): 143532477

約数列:

[1, 3, 5, 15, 25, 75, 313, 939, 1565, 4695, 7825, 9281, 23475, 27843, 46405, 139215, 232025, 696075, 2904953, 8714859, 14524765, 43574295, 72623825, 217871475]

約数ペア:

[(1, 217871475), (3, 72623825), (5, 43574295), (15, 14524765), (25, 8714859), (75, 2904953), (313, 696075), (939, 232025), (1565, 139215), (4695, 46405), (7825, 27843), (9281, 23475)]