21306265

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^2$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 27416088

約数和(自身を除く): 6109823

約数列:

[1, 5, 37, 41, 53, 185, 205, 265, 1517, 1961, 2173, 2809, 7585, 9805, 10865, 14045, 80401, 103933, 115169, 402005, 519665, 575845, 4261253, 21306265]

約数ペア:

[(1, 21306265), (5, 4261253), (37, 575845), (41, 519665), (53, 402005), (185, 115169), (205, 103933), (265, 80401), (1517, 14045), (1961, 10865), (2173, 9805), (2809, 7585)]