645702477

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{257}}^1\times {\mathrm{661}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 994715904

約数和(自身を除く): 349013427

約数列:

[1, 3, 7, 21, 181, 257, 543, 661, 771, 1267, 1799, 1983, 3801, 4627, 5397, 13881, 46517, 119641, 139551, 169877, 325619, 358923, 509631, 837487, 976857, 1189139, 2512461, 3567417, 30747737, 92243211, 215234159, 645702477]

約数ペア:

[(1, 645702477), (3, 215234159), (7, 92243211), (21, 30747737), (181, 3567417), (257, 2512461), (543, 1189139), (661, 976857), (771, 837487), (1267, 509631), (1799, 358923), (1983, 325619), (3801, 169877), (4627, 139551), (5397, 119641), (13881, 46517)]