21024835

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 29393280

約数和(自身を除く): 8368445

約数列:

[1, 5, 13, 17, 53, 65, 85, 221, 265, 359, 689, 901, 1105, 1795, 3445, 4505, 4667, 6103, 11713, 19027, 23335, 30515, 58565, 79339, 95135, 247351, 323459, 396695, 1236755, 1617295, 4204967, 21024835]

約数ペア:

[(1, 21024835), (5, 4204967), (13, 1617295), (17, 1236755), (53, 396695), (65, 323459), (85, 247351), (221, 95135), (265, 79339), (359, 58565), (689, 30515), (901, 23335), (1105, 19027), (1795, 11713), (3445, 6103), (4505, 4667)]