81125648

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1$

素因数の和:555

約数の個数: 40

約数和(自身を含む): 160119960

約数和(自身を除く): 78994312

約数列:

[1, 2, 4, 8, 16, 109, 181, 218, 257, 362, 436, 514, 724, 872, 1028, 1448, 1744, 2056, 2896, 4112, 19729, 28013, 39458, 46517, 56026, 78916, 93034, 112052, 157832, 186068, 224104, 315664, 372136, 448208, 744272, 5070353, 10140706, 20281412, 40562824, 81125648]

約数ペア:

[(1, 81125648), (2, 40562824), (4, 20281412), (8, 10140706), (16, 5070353), (109, 744272), (181, 448208), (218, 372136), (257, 315664), (362, 224104), (436, 186068), (514, 157832), (724, 112052), (872, 93034), (1028, 78916), (1448, 56026), (1744, 46517), (2056, 39458), (2896, 28013), (4112, 19729)]