20972145

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 13495695

約数列:

[1, 3, 5, 15, 101, 109, 127, 303, 327, 381, 505, 545, 635, 1515, 1635, 1905, 11009, 12827, 13843, 33027, 38481, 41529, 55045, 64135, 69215, 165135, 192405, 207645, 1398143, 4194429, 6990715, 20972145]

約数ペア:

[(1, 20972145), (3, 6990715), (5, 4194429), (15, 1398143), (101, 207645), (109, 192405), (127, 165135), (303, 69215), (327, 64135), (381, 55045), (505, 41529), (545, 38481), (635, 33027), (1515, 13843), (1635, 12827), (1905, 11009)]