27978825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 53389440

約数和(自身を除く): 25410615

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 137, 175, 389, 411, 525, 685, 959, 1167, 1945, 2055, 2723, 2877, 3425, 4795, 5835, 8169, 9725, 10275, 13615, 14385, 23975, 29175, 40845, 53293, 68075, 71925, 159879, 204225, 266465, 373051, 799395, 1119153, 1332325, 1865255, 3996975, 5595765, 9326275, 27978825]

約数ペア:

[(1, 27978825), (3, 9326275), (5, 5595765), (7, 3996975), (15, 1865255), (21, 1332325), (25, 1119153), (35, 799395), (75, 373051), (105, 266465), (137, 204225), (175, 159879), (389, 71925), (411, 68075), (525, 53293), (685, 40845), (959, 29175), (1167, 23975), (1945, 14385), (2055, 13615), (2723, 10275), (2877, 9725), (3425, 8169), (4795, 5835)]