21231018

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{20693}}^1$

素因数の和:20723

約数の個数: 32

約数和(自身を含む): 49665600

約数和(自身を除く): 28434582

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 114, 171, 342, 513, 1026, 20693, 41386, 62079, 124158, 186237, 372474, 393167, 558711, 786334, 1117422, 1179501, 2359002, 3538503, 7077006, 10615509, 21231018]

約数ペア:

[(1, 21231018), (2, 10615509), (3, 7077006), (6, 3538503), (9, 2359002), (18, 1179501), (19, 1117422), (27, 786334), (38, 558711), (54, 393167), (57, 372474), (114, 186237), (171, 124158), (342, 62079), (513, 41386), (1026, 20693)]