669649360

素因数分解:

$2^4\times 5^1\times {\mathrm{8370617}}^1$

素因数の和:8370630

約数の個数: 20

約数和(自身を含む): 1556934948

約数和(自身を除く): 887285588

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8370617, 16741234, 33482468, 41853085, 66964936, 83706170, 133929872, 167412340, 334824680, 669649360]

約数ペア:

[(1, 669649360), (2, 334824680), (4, 167412340), (5, 133929872), (8, 83706170), (10, 66964936), (16, 41853085), (20, 33482468), (40, 16741234), (80, 8370617)]