21037725

素因数分解:

$3^5\times 5^2\times {\mathrm{3463}}^1$

素因数の和:3488

約数の個数: 36

約数和(自身を含む): 39087776

約数和(自身を除く): 18050051

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 1215, 2025, 3463, 6075, 10389, 17315, 31167, 51945, 86575, 93501, 155835, 259725, 280503, 467505, 779175, 841509, 1402515, 2337525, 4207545, 7012575, 21037725]

約数ペア:

[(1, 21037725), (3, 7012575), (5, 4207545), (9, 2337525), (15, 1402515), (25, 841509), (27, 779175), (45, 467505), (75, 280503), (81, 259725), (135, 155835), (225, 93501), (243, 86575), (405, 51945), (675, 31167), (1215, 17315), (2025, 10389), (3463, 6075)]