28241865

素因数分解:

$3^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:663

約数の個数: 40

約数和(自身を含む): 51095880

約数和(自身を除く): 22854015

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 137, 405, 411, 509, 685, 1233, 1527, 2055, 2545, 3699, 4581, 6165, 7635, 11097, 13743, 18495, 22905, 41229, 55485, 68715, 69733, 206145, 209199, 348665, 627597, 1045995, 1882791, 3137985, 5648373, 9413955, 28241865]

約数ペア:

[(1, 28241865), (3, 9413955), (5, 5648373), (9, 3137985), (15, 1882791), (27, 1045995), (45, 627597), (81, 348665), (135, 209199), (137, 206145), (405, 69733), (411, 68715), (509, 55485), (685, 41229), (1233, 22905), (1527, 18495), (2055, 13743), (2545, 11097), (3699, 7635), (4581, 6165)]