21954387

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{587}}^1$

素因数の和:747

約数の個数: 32

約数和(自身を含む): 36352512

約数和(自身を除く): 14398125

約数列:

[1, 3, 7, 13, 21, 39, 91, 137, 273, 411, 587, 959, 1761, 1781, 2877, 4109, 5343, 7631, 12327, 12467, 22893, 37401, 53417, 80419, 160251, 241257, 562933, 1045447, 1688799, 3136341, 7318129, 21954387]

約数ペア:

[(1, 21954387), (3, 7318129), (7, 3136341), (13, 1688799), (21, 1045447), (39, 562933), (91, 241257), (137, 160251), (273, 80419), (411, 53417), (587, 37401), (959, 22893), (1761, 12467), (1781, 12327), (2877, 7631), (4109, 5343)]