19766187

素因数分解:

$3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 34290432

約数和(自身を除く): 14524245

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 189, 213, 491, 497, 567, 639, 1473, 1491, 1917, 3437, 4419, 4473, 5751, 10311, 13257, 13419, 30933, 34861, 39771, 40257, 92799, 104583, 244027, 278397, 313749, 732081, 941247, 2196243, 2823741, 6588729, 19766187]

約数ペア:

[(1, 19766187), (3, 6588729), (7, 2823741), (9, 2196243), (21, 941247), (27, 732081), (63, 313749), (71, 278397), (81, 244027), (189, 104583), (213, 92799), (491, 40257), (497, 39771), (567, 34861), (639, 30933), (1473, 13419), (1491, 13257), (1917, 10311), (3437, 5751), (4419, 4473)]