21690584

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{577}}^1$

素因数の和:747

約数の個数: 32

約数和(自身を含む): 42170880

約数和(自身を除く): 20480296

約数列:

[1, 2, 4, 8, 37, 74, 127, 148, 254, 296, 508, 577, 1016, 1154, 2308, 4616, 4699, 9398, 18796, 21349, 37592, 42698, 73279, 85396, 146558, 170792, 293116, 586232, 2711323, 5422646, 10845292, 21690584]

約数ペア:

[(1, 21690584), (2, 10845292), (4, 5422646), (8, 2711323), (37, 586232), (74, 293116), (127, 170792), (148, 146558), (254, 85396), (296, 73279), (508, 42698), (577, 37592), (1016, 21349), (1154, 18796), (2308, 9398), (4616, 4699)]