215877981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{2477}}^1$

素因数の和:2649

約数の個数: 32

約数和(自身を含む): 333043200

約数和(自身を除く): 117165219

約数列:

[1, 3, 11, 19, 33, 57, 139, 209, 417, 627, 1529, 2477, 2641, 4587, 7431, 7923, 27247, 29051, 47063, 81741, 87153, 141189, 344303, 517693, 1032909, 1553079, 3787333, 6541757, 11361999, 19625271, 71959327, 215877981]

約数ペア:

[(1, 215877981), (3, 71959327), (11, 19625271), (19, 11361999), (33, 6541757), (57, 3787333), (139, 1553079), (209, 1032909), (417, 517693), (627, 344303), (1529, 141189), (2477, 87153), (2641, 81741), (4587, 47063), (7431, 29051), (7923, 27247)]