20403405

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{877}}^1$

素因数の和:946

約数の個数: 48

約数和(自身を含む): 39446784

約数和(自身を除く): 19043379

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 47, 55, 99, 141, 165, 235, 423, 495, 517, 705, 877, 1551, 2115, 2585, 2631, 4385, 4653, 7755, 7893, 9647, 13155, 23265, 28941, 39465, 41219, 48235, 86823, 123657, 144705, 206095, 370971, 434115, 453409, 618285, 1360227, 1854855, 2267045, 4080681, 6801135, 20403405]

約数ペア:

[(1, 20403405), (3, 6801135), (5, 4080681), (9, 2267045), (11, 1854855), (15, 1360227), (33, 618285), (45, 453409), (47, 434115), (55, 370971), (99, 206095), (141, 144705), (165, 123657), (235, 86823), (423, 48235), (495, 41219), (517, 39465), (705, 28941), (877, 23265), (1551, 13155), (2115, 9647), (2585, 7893), (2631, 7755), (4385, 4653)]