18801513

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 28169856

約数和(自身を除く): 9368343

約数列:

[1, 3, 9, 37, 111, 131, 333, 393, 431, 1179, 1293, 3879, 4847, 14541, 15947, 43623, 47841, 56461, 143523, 169383, 508149, 2089057, 6267171, 18801513]

約数ペア:

[(1, 18801513), (3, 6267171), (9, 2089057), (37, 508149), (111, 169383), (131, 143523), (333, 56461), (393, 47841), (431, 43623), (1179, 15947), (1293, 14541), (3879, 4847)]