27904420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 60939648

約数和(自身を除く): 33035228

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 355, 430, 457, 710, 860, 914, 1420, 1828, 2285, 3053, 4570, 6106, 9140, 12212, 15265, 19651, 30530, 32447, 39302, 61060, 64894, 78604, 98255, 129788, 162235, 196510, 324470, 393020, 648940, 1395221, 2790442, 5580884, 6976105, 13952210, 27904420]

約数ペア:

[(1, 27904420), (2, 13952210), (4, 6976105), (5, 5580884), (10, 2790442), (20, 1395221), (43, 648940), (71, 393020), (86, 324470), (142, 196510), (172, 162235), (215, 129788), (284, 98255), (355, 78604), (430, 64894), (457, 61060), (710, 39302), (860, 32447), (914, 30530), (1420, 19651), (1828, 15265), (2285, 12212), (3053, 9140), (4570, 6106)]