215465680

素因数分解:

$2^4\times 5^1\times {\mathrm{2693321}}^1$

素因数の和:2693334

約数の個数: 20

約数和(自身を含む): 500957892

約数和(自身を除く): 285492212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2693321, 5386642, 10773284, 13466605, 21546568, 26933210, 43093136, 53866420, 107732840, 215465680]

約数ペア:

[(1, 215465680), (2, 107732840), (4, 53866420), (5, 43093136), (8, 26933210), (10, 21546568), (16, 13466605), (20, 10773284), (40, 5386642), (80, 2693321)]