20977528

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1667}}^1$

素因数の和:1708

約数の個数: 48

約数和(自身を含む): 46587240

約数和(自身を除く): 25609712

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 121, 143, 242, 286, 484, 572, 968, 1144, 1573, 1667, 3146, 3334, 6292, 6668, 12584, 13336, 18337, 21671, 36674, 43342, 73348, 86684, 146696, 173368, 201707, 238381, 403414, 476762, 806828, 953524, 1613656, 1907048, 2622191, 5244382, 10488764, 20977528]

約数ペア:

[(1, 20977528), (2, 10488764), (4, 5244382), (8, 2622191), (11, 1907048), (13, 1613656), (22, 953524), (26, 806828), (44, 476762), (52, 403414), (88, 238381), (104, 201707), (121, 173368), (143, 146696), (242, 86684), (286, 73348), (484, 43342), (572, 36674), (968, 21671), (1144, 18337), (1573, 13336), (1667, 12584), (3146, 6668), (3334, 6292)]