18960081

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 31747968

約数和(自身を除く): 12787887

約数列:

[1, 3, 7, 19, 21, 41, 57, 61, 123, 133, 183, 287, 361, 399, 427, 779, 861, 1083, 1159, 1281, 2337, 2501, 2527, 3477, 5453, 7503, 7581, 8113, 14801, 16359, 17507, 22021, 24339, 44403, 47519, 52521, 66063, 103607, 142557, 154147, 310821, 332633, 462441, 902861, 997899, 2708583, 6320027, 18960081]

約数ペア:

[(1, 18960081), (3, 6320027), (7, 2708583), (19, 997899), (21, 902861), (41, 462441), (57, 332633), (61, 310821), (123, 154147), (133, 142557), (183, 103607), (287, 66063), (361, 52521), (399, 47519), (427, 44403), (779, 24339), (861, 22021), (1083, 17507), (1159, 16359), (1281, 14801), (2337, 8113), (2501, 7581), (2527, 7503), (3477, 5453)]