19757241

素因数分解:

$3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{631}}^1$

素因数の和:722

約数の個数: 36

約数和(自身を含む): 33718464

約数和(自身を除く): 13961223

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 147, 213, 441, 497, 631, 639, 1491, 1893, 3479, 4417, 4473, 5679, 10437, 13251, 30919, 31311, 39753, 44801, 92757, 134403, 278271, 313607, 403209, 940821, 2195249, 2822463, 6585747, 19757241]

約数ペア:

[(1, 19757241), (3, 6585747), (7, 2822463), (9, 2195249), (21, 940821), (49, 403209), (63, 313607), (71, 278271), (147, 134403), (213, 92757), (441, 44801), (497, 39753), (631, 31311), (639, 30919), (1491, 13251), (1893, 10437), (3479, 5679), (4417, 4473)]