16561155

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 29514240

約数和(自身を除く): 12953085

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 139, 141, 169, 195, 235, 417, 507, 611, 695, 705, 845, 1807, 1833, 2085, 2535, 3055, 5421, 6533, 7943, 9035, 9165, 19599, 23491, 23829, 27105, 32665, 39715, 70473, 84929, 97995, 117455, 119145, 254787, 352365, 424645, 1104077, 1273935, 3312231, 5520385, 16561155]

約数ペア:

[(1, 16561155), (3, 5520385), (5, 3312231), (13, 1273935), (15, 1104077), (39, 424645), (47, 352365), (65, 254787), (139, 119145), (141, 117455), (169, 97995), (195, 84929), (235, 70473), (417, 39715), (507, 32665), (611, 27105), (695, 23829), (705, 23491), (845, 19599), (1807, 9165), (1833, 9035), (2085, 7943), (2535, 6533), (3055, 5421)]