17771229

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 31000320

約数和(自身を除く): 13229091

約数列:

[1, 3, 7, 9, 21, 29, 63, 71, 87, 137, 203, 213, 261, 411, 497, 609, 639, 959, 1233, 1491, 1827, 2059, 2877, 3973, 4473, 6177, 8631, 9727, 11919, 14413, 18531, 27811, 29181, 35757, 43239, 68089, 83433, 87543, 129717, 204267, 250299, 282083, 612801, 846249, 1974581, 2538747, 5923743, 17771229]

約数ペア:

[(1, 17771229), (3, 5923743), (7, 2538747), (9, 1974581), (21, 846249), (29, 612801), (63, 282083), (71, 250299), (87, 204267), (137, 129717), (203, 87543), (213, 83433), (261, 68089), (411, 43239), (497, 35757), (609, 29181), (639, 27811), (959, 18531), (1233, 14413), (1491, 11919), (1827, 9727), (2059, 8631), (2877, 6177), (3973, 4473)]