21036405

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{463}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 36481536

約数和(自身を除く): 15445131

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 233, 463, 699, 1165, 1389, 2315, 3029, 3495, 6019, 6945, 9087, 15145, 18057, 30095, 45435, 90285, 107879, 323637, 539395, 1402427, 1618185, 4207281, 7012135, 21036405]

約数ペア:

[(1, 21036405), (3, 7012135), (5, 4207281), (13, 1618185), (15, 1402427), (39, 539395), (65, 323637), (195, 107879), (233, 90285), (463, 45435), (699, 30095), (1165, 18057), (1389, 15145), (2315, 9087), (3029, 6945), (3495, 6019)]