21291650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{677}}^1$

素因数の和:743

約数の個数: 48

約数和(自身を含む): 43128936

約数和(自身を除く): 21837286

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 50, 74, 85, 170, 185, 370, 425, 629, 677, 850, 925, 1258, 1354, 1850, 3145, 3385, 6290, 6770, 11509, 15725, 16925, 23018, 25049, 31450, 33850, 50098, 57545, 115090, 125245, 250490, 287725, 425833, 575450, 626225, 851666, 1252450, 2129165, 4258330, 10645825, 21291650]

約数ペア:

[(1, 21291650), (2, 10645825), (5, 4258330), (10, 2129165), (17, 1252450), (25, 851666), (34, 626225), (37, 575450), (50, 425833), (74, 287725), (85, 250490), (170, 125245), (185, 115090), (370, 57545), (425, 50098), (629, 33850), (677, 31450), (850, 25049), (925, 23018), (1258, 16925), (1354, 15725), (1850, 11509), (3145, 6770), (3385, 6290)]